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The Mansion on the Sea - Southernmost House in the USA

4.0 star property

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Mansion Room #201 - Ocean View with private balcony - Adults Only | Terrace/patio
Front of property – evening/night
Terrace/patio
Mansion Room #106 - Ocean View w/ Direct Pool Access - Adults Only | Premium bedding, pillow-top beds, individually furnished
Bungalow #101 -Ocean Front - Adults Only | Living area | 42-inch flat-screen TV with cable channels, TV, streaming services

Reviews

9.4 out of 10
Exceptional

Popular amenities

  • Bar
  • Room service

Explore the area

Map
1400 Duval Street, Key West, FL, 33040
  • Duval Street
    ‪1 min walk‬
  • South Beach
    ‪1 min walk‬
  • Southernmost Point
    ‪2 min walk‬
  • Key West, FL (EYW-Key West Intl.)
    ‪8 min drive‬

Room options

View all photos for Mansion Room #204 - Courtyard View - Adults Only

Mansion Room #204 - Courtyard View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Mansion Room #204 - Courtyard View - Adults Only

  • 46 sq m
  • Sleeps 2
  • 1 King Bed

View all photos for Mansion Room #107 - Ocean View - Adults Only

Mansion Room #107 - Ocean View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Mansion Room #107 - Ocean View - Adults Only

  • 46 sq m
  • Ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Mansion Room #203 - Courtyard View - Adults Only

Mansion Room #203 - Courtyard View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Mansion Room #203 - Courtyard View - Adults Only

  • 46 sq m
  • Sleeps 2
  • 1 King Bed

View all photos for Bungalow #101 -Ocean Front - Adults Only

Bungalow #101 -Ocean Front - Adults Only | Premium bedding, pillow-top beds, individually furnished

Bungalow #101 -Ocean Front - Adults Only

  • 46 sq m
  • Ocean view
  • Sleeps 4
  • 1 King Bed and 1 Queen Sofa Bed OR 1 King Bed

View all photos for Mansion Room #106 - Ocean View w/ Direct Pool Access - Adults Only

Mansion Room #106 - Ocean View w/ Direct Pool Access - Adults Only | Premium bedding, pillow-top beds, individually furnished

Mansion Room #106 - Ocean View w/ Direct Pool Access - Adults Only

  • 46 sq m
  • Partial ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Mansion Room #201 - Ocean View with private balcony - Adults Only

Mansion Room #201 - Ocean View with private balcony - Adults Only | Premium bedding, pillow-top beds, individually furnished

Mansion Room #201 - Ocean View with private balcony - Adults Only

  • 46 sq m
  • Ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Mansion Room #202 - Ocean View - Adults Only

Mansion Room #202 - Ocean View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Mansion Room #202 - Ocean View - Adults Only

  • 28 sq m
  • Ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Mansion Room #301 - Tower Outlook to Ocean View - Adults Only

Mansion Room #301 - Tower Outlook to Ocean View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Mansion Room #301 - Tower Outlook to Ocean View - Adults Only

  • 28 sq m
  • Ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Lopez House #108 - King Courtyard Suite with Kitchen - Adults Only

Lopez House #108 - King Courtyard Suite with Kitchen - Adults Only | Premium bedding, pillow-top beds, individually furnished

Lopez House #108 - King Courtyard Suite with Kitchen - Adults Only

  • 65 sq m
  • Partial ocean view
  • Sleeps 4
  • 1 King Bed and 1 Queen Sofa Bed

View all photos for Mansion Room #302 - Oceanview - 1 King Bed - Adults Only

Mansion Room #302 - Oceanview - 1 King Bed - Adults Only | Premium bedding, pillow-top beds, individually furnished

Mansion Room #302 - Oceanview - 1 King Bed - Adults Only

  • 46 sq m
  • Partial ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Bungalow #102 - Pool View - Adults Only

Bungalow #102 - Pool View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Bungalow #102 - Pool View - Adults Only

  • 37 sq m
  • Sleeps 4
  • 1 Queen Bed and 1 Double Sofa Bed

View all photos for Cottage #104 - Ocean View w/Direct Pool Access - Adults only

Cottage #104 - Ocean View w/Direct Pool Access - Adults only | Premium bedding, pillow-top beds, individually furnished

Cottage #104 - Ocean View w/Direct Pool Access - Adults only

  • 28 sq m
  • Sleeps 4
  • 1 King Bed and 1 Double Sofa Bed

View all photos for Mansion Room #303 - Courtyard View - Adults Only

Mansion Room #303 - Courtyard View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Mansion Room #303 - Courtyard View - Adults Only

  • 46 sq m
  • City view
  • Sleeps 4
  • 2 Queen Beds

View all photos for Lopez House #109 - Courtyard View - Adults Only

Lopez House #109 - Courtyard View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Lopez House #109 - Courtyard View - Adults Only

  • 46 sq m
  • Sleeps 2
  • 1 Queen Bed

View all photos for Lopez House #205 - Partial Ocean View - Adults Only

Lopez House #205 - Partial Ocean View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Lopez House #205 - Partial Ocean View - Adults Only

  • 46 sq m
  • Ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Lopez House #206 - Partial Ocean View - Adults Only

Lopez House #206 - Partial Ocean View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Lopez House #206 - Partial Ocean View - Adults Only

  • 46 sq m
  • Ocean view
  • Sleeps 2
  • 1 King Bed

View all photos for Lopez House #207 - Courtyard View - Adults Only

Lopez House #207 - Courtyard View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Lopez House #207 - Courtyard View - Adults Only

  • 46 sq m
  • Sleeps 2
  • 1 King Bed

View all photos for Bungalow #103 - Pool View - Adults Only

Bungalow #103 - Pool View - Adults Only | Premium bedding, pillow-top beds, individually furnished

Bungalow #103 - Pool View - Adults Only

  • 28 sq m
  • Sleeps 2
  • 1 Queen Bed

Similar properties

3 outdoor pools, pool umbrellas, pool loungers

Southernmost Beach Resort and Guesthouses

  • Pool
  • Spa
  • Free WiFi
  • Restaurant
4.4 out of 5, Excellent, (2499)
The price is €436
for 1 room
includes taxes & fees
19 Jun - 20 Jun
Southernmost Beach Resort and Guesthouses

About this property

The Mansion on the Sea - Southernmost House in the USA

Adults-only beach hotel with outdoor pool
An outdoor pool, a restaurant and a bar/lounge are available at this hotel. Free continental breakfast and free WiFi in public areas are also provided. Other amenities include a poolside bar, a snack bar/deli and self parking. Housekeeping is available on request.
The Mansion on the Sea - Southernmost House in the USA offers 18 air-conditioned accommodations with free newspapers and coffee/tea makers. Each accommodation is individually furnished. Pillowtop beds feature premium bedding. 42-inch flat-screen televisions come with premium cable channels.

Bathrooms include a shower, designer toiletries, complimentary toiletries and hairdryers. This Key West hotel provides complimentary wireless Internet access, with a speed of 500+ Mbps (good for 6+ people or 10+ devices). Housekeeping is provided on a daily basis.

Recreational amenities at the hotel include an outdoor pool.

The recreational activities listed below are available either on-site or nearby; fees may apply.

Our customers tell us they can't get enough of The Mansion on the Sea - Southernmost House in the USA's great location. During your stay, you're just a quick walk from Duval Street. Features include free breakfast and free WiFi in public areas, plus an outdoor pool.
  • Free continental breakfast served daily
  • Free Wi-Fi (speed: 500+ Mbps (good for 6+ people or 10+ devices))
  • Enjoy a bite to eat at Seaside Cafe at Mansion, a café with ocean views
  • Self-parking available for a fee
  • Take a swim in the outdoor pool
  • Services include a concierge, tour or ticket assistance and a porter
  • Guests have great things to say about the helpful staff and the overall condition of the property
  • Steps from Southernmost Point and Duval Street
There's a restaurant on site, as well as a snack bar/deli. You can enjoy a drink at one of the bars, which include a poolside bar and a bar/lounge. Free breakfast is available daily. WiFi is free in public spaces.

An outdoor pool, a terrace, and multilingual staff are also featured at The Mansion on the Sea - Southernmost House in the USA. Parking is available for a fee.

Smoking is allowed in designated areas at this Victorian Key West hotel.

Guests are served a free continental breakfast daily from 8 AM to 10 AM.
Seaside Cafe at Mansion – Overlooking the ocean, this café serves lunch and dinner. Guests can enjoy drinks at the bar.
Room service is available.

Languages

English, French, Russian, Spanish

Property amenities

Internet

  • Available in all rooms: Free WiFi
  • In-room WiFi speed: 500+ Mbps (good for 6+ people or 10+ devices)
  • Available in some public areas: Free WiFi

Parking and transport

  • Parking on site (USD 25 per night)

Food and drink

  • Free continental breakfast available daily 8 AM to 10 AM
  • A bar/lounge
  • A poolside bar
  • A restaurant
  • Coffee and tea in common areas
  • Snack bar/deli

Restaurants on site

  • Seaside Cafe at Mansion

Things to do

  • Outdoor pool
  • Shopping
  • TV in common areas

Conveniences

  • Free newspapers in lobby
  • Gift shop/newsstand
  • Limited-hour front desk
  • Luggage storage
  • Safe at front desk

Guest services

  • Concierge services
  • Housekeeping (daily)
  • Multilingual staff
  • Porter/bellhop
  • Proposal/romance packages
  • Tour and ticket assistance
  • Wedding services

Outdoors

  • Beach loungers
  • Beach towels
  • Garden
  • On the waterfront
  • Outdoor furniture
  • Picnic area
  • Pool loungers
  • Pool umbrellas
  • Terrace

Accessibility

  • If you have requests for specific accessibility needs, please contact the property using the information on the reservation confirmation received after booking.
  • Upper floors accessible by stairs only
  • Well-lit path to entrance

More

  • 3 buildings
  • 3 floors
  • Built in 1897
  • Designated smoking areas
  • Reception hall
  • Victorian architecture

Room amenities

Bedroom

  • Pillowtop mattress
  • Premium bedding

Bathroom

  • Designer toiletries
  • Hair dryer
  • Shampoo
  • Shower
  • Soap
  • Toilet paper
  • Towels provided

Entertainment

  • 42-inch flat-screen TV with premium cable channels
  • Streaming services

Food and drink

  • Champagne service
  • Coffee/tea maker
  • Room service

More

  • Air conditioning
  • Free daily newspapers
  • Individual furnishings
  • Iron/ironing board

Policies

Check-in

Check-in start time: 4 PM; check-in end time: 10 PM
Early check-in subject to availability
Contactless check-in and check-out are available
Late check-in subject to availability
Minimum check-in age - 18

Check-out

Check-out before 11 AM
Contactless check-out

Special check-in instructions

The front desk is open daily from 8:00 AM - 10 PM
Front desk staffed during limited hours
If you are planning to arrive after 8:00 PM please contact the property in advance using the information on the booking confirmation

Access methods

Front desk (limited hours)

Pets

  • No pets allowed

Children and extra beds

  • Children younger than 18 are not allowed at this adults-only property. All guests 18 and older are welcome.
  • Cots (infant beds) are not available.

Payment types at the property

Important information

Fees

Guests will be asked to pay the following charges at the property:

  • Spring Break deposit: USD 250 per stay for guests aged under 21 years old staying between 1 March and 31 March

We've listed all charges provided to us by the property.

Optional extras

The fees and deposits listed below will be charged at the time of service, check-in, or check-out.

  • Self-parking fee: USD 25 per night

This may not be a comprehensive list. Fees and deposits are subject to change and might not include tax.

You need to know

This property is managed by a professional host. The provision of housing is linked to their trade, business or profession.
Extra-person charges may apply and vary depending on property policy
Government-issued photo identification and a credit card, debit card or cash deposit may be required at check-in for incidental charges
Special requests are subject to availability upon check-in and may incur additional charges; special requests cannot be guaranteed
Minimum Spring Break check-in age is 24 years old.
This property accepts credit cards; cash is not accepted
Noise-free guestrooms cannot be guaranteed
Safety features at this property include a carbon monoxide detector, a fire extinguisher and a smoke detector
This property has outdoor spaces, such as balconies, patios and terraces, which may not be suitable for children; if you have any concerns, we recommend contacting the property prior to your arrival to confirm that they can accommodate you in a suitable room
The front desk at this property is open daily from 8:00 AM - 10 PM.
Guests arriving after 8:00 PM must make advance arrangements by contacting the property using the information on the booking confirmation. Front desk staff will greet guests on arrival at the property.

We should mention

  • This is an adults-only property and children 18 years old and younger aren't allowed.
  • Registered guests are the only ones allowed to be in guestrooms.

Property is also known as

Southernmost House
Southernmost House Hotel
Southernmost House Hotel Key West
Southernmost House Key West
Southernmost House
The Southernmost House Hotel
The Southernmost House Hotel Adults Only
The Mansion on the Sea Southernmost House in the USA
The Mansion on the Sea - Southernmost House in the USA Hotel
The Mansion on the Sea - Southernmost House in the USA Key West

The Mansion on the Sea - Southernmost House in the USA Reviews

Reviews

9.4

Exceptional

Rating 10 - Excellent. 750 out of 1004 reviews
Rating 8 - Good. 164 out of 1004 reviews
Rating 6 - Okay. 59 out of 1004 reviews
Rating 4 - Poor. 20 out of 1004 reviews
Rating 2 - Terrible. 11 out of 1004 reviews

9.4/10

Cleanliness

9.4/10

Staff & service

9.2/10

Amenities

9.0/10

Property conditions & facilities

9.2/10

Eco-friendliness

Reviews

10/10 Excellent

Beth

Travelled with group
Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

Can't wait to return

Loved every part of our stay at the quaint Hotel. We had a door that led to the pool, so nice. Perfect get away.
Stayed 3 nights in Feb 2025

10/10 Excellent

Rhea

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 3 nights in Feb 2025

10/10 Excellent

richard

Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
First time staying here and we loved it! Definitely returning next year ! Entire staff and general manager Nina are super friendly and accommodating . This is an old historical mansion with wonderful views of the ocean and in a great location !
Stayed 4 nights in Feb 2025

10/10 Excellent

Matthew

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Great
Stayed 1 night in Mar 2025

6/10 Okay

Neil

Travelled with partner
Liked: Staff & service, amenities
Disliked: Property conditions & facilities
Two historic (previously) homes with rooms that have been turned into sleeping/convenience suites. Not a modernized hotel experience if that is what yo are seeking. Very antiqueish, unique, and rustic and right on the oceanside - however there is no beach area for this hotel. Buildings and rooms retain an authentic old-style appearance but look to have been remodeled some time ago and are in need of basic or new repairs & maintenance - everything inside and outside, as well as the garden grounds, seem a bit shabby, neglected, and not getting the regular "professional" care that such a place deserves - shameful. Parking is good. Continental breakfast is good. Staff is friendly. Location is excellent and very convenient for walking, biking, and commuting everywhere in Key West, Duval St., and oceanside areas. Many bars, shops, and other "adult" related entertainments nearby but the Key West area is kind of sleazy and very touristy focused - not the best area for bringing kids or for those who do not care to drink and party.

10/10 Excellent

Nicholas V

Stayed 3 nights in Feb 2025

10/10 Excellent

Kelli

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 2 nights in Jan 2025

10/10 Excellent

Katherine

Travelled with partner
Liked: Staff & service, property conditions & facilities
Staff were excellent! Room was clean!! Didn’t like the 3rd floor walk up!!
Stayed 3 nights in Feb 2025

10/10 Excellent

Paul

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 3 nights in Feb 2025

10/10 Excellent

Ami

Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
The staff was very friendly and helpful. The room was delightful and very clean. Breakfast was very good. We loved spending time on the balcony and at the heated pool. We loved having the resort feel with no crowd.
Stayed 5 nights in Feb 2025

10/10 Excellent

Kathleen

Liked: Cleanliness, staff & service, property conditions & facilities
I could walk out to pool and get a chair at the pool, always available.
Stayed 4 nights in Feb 2025

10/10 Excellent

Steve

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 3 nights in Feb 2025

10/10 Excellent

Jim

Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Great pool. Ocean views.
Stayed 4 nights in Feb 2025

10/10 Excellent

Andrew

Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
Perfect get away
Stayed 1 night in Feb 2025

10/10 Excellent

Bonnie

The breakfast was wonderful and the desk staff were extremely helpful.
Stayed 2 nights in Feb 2025

10/10 Excellent

Debra

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

Mansion at Southernmost House

Beautiful property, very friendly staff, and great location.
Stayed 3 nights in Feb 2025

10/10 Excellent

Ellen

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 1 night in Feb 2025

10/10 Excellent

Gerald

Liked: Cleanliness, staff & service, property conditions & facilities, room comfort

Great and Relaxing week at the Mansion

Everything about the Mansion was very good. The staff was friendly and very professional. The breakfast was very nice and met all of our needs. Our room was clean and service was very efficient. The grounds were a pleasure to explore and use, especially the pool which provided a view of the ocean. Thank you
Stayed 5 nights in Feb 2025

10/10 Excellent

Edward

Liked: Staff & service, property conditions & facilities
Staff and location could not have been nicer.
Stayed 4 nights in Jan 2025

8/10 Good

Ronald

Liked: Cleanliness, staff & service, amenities, property conditions & facilities
The property was wonderful. My only issue was we stayed in room 106 which was right next ro their common bathroom which had a lot of traffic and noise.
Stayed 5 nights in Jan 2025

8/10 Good

Brian, Broomfield

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 2 nights in Jan 2025

10/10 Excellent

William

Liked: Cleanliness, staff & service, property conditions & facilities
Stayed 3 nights in Jan 2025

10/10 Excellent

Edward

Travelled with family
Liked: Cleanliness, property conditions & facilities, room comfort

2 Areas for Improvement

Staff could not have been friendlier or more helpful. Two areas for improvement: restrooms for bar and restaurant interfere with some cottages. Rooms should have real drinking glasses not cheap plastic cups.
Stayed 5 nights in Jan 2025

10/10 Excellent

Douglas

Travelled with partner
Liked: Cleanliness, staff & service, amenities, property conditions & facilities
We can't say enough great things about this hotel. As soon as we arrived, we were welcomed by the staff and received excellent service throughout our stay. The Mansion itself is beautiful and our room (204) was perfect. The pool and access to the adjacent bar were fantastic for our "pool days." The pool never got crowded and there were plenty of lounge chairs and beach towels provided. The hotel is conveniently located at the (quieter) end of Duval Street and it's an easy walk or Uber ride to dinners, etc. We also appreciated the complimentary breakfast provided every morning - it's definitely a step-up from the typical continental breakfast provided by many hotels. Truly, we look forward to staying here again in the future.
Stayed 4 nights in Jan 2025

8/10 Good

Harriet, Fayetteville

Stayed 3 nights in Jan 2025