Along with an outdoor pool, this smoke-free hotel has a restaurant and a bar/lounge. Free continental breakfast and free WiFi in public areas are also provided. Other amenities include self parking, coffee/tea in a common area and a picnic area. Housekeeping is available on request.
Southernmost House - Adult Exclusive offers 18 air-conditioned accommodations with coffee/tea makers and designer toiletries. Each accommodation is individually furnished. Pillowtop beds feature premium bedding. 42-inch flat-screen televisions come with premium cable channels.
Bathrooms include a shower, complimentary toiletries and hairdryers. This Key West hotel provides complimentary wireless Internet access, with a speed of 100+ Mbps (good for 1–2 people or up to 6 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 Southernmost House - Adult Exclusive's great location. During your stay, you're just a quick walk from Florida Keys Beaches. Features include free breakfast and free WiFi in public areas, plus an outdoor pool.
Free continental breakfast served daily
Free Wi-Fi (speed: 100+ Mbps (good for 1–2 people or up to 6 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
Amenities include multilingual staff, a terrace and coffee/tea in a common area
Guests have great things to say about the helpful staff and the location
Steps from Southernmost Point and Duval Street
There's a restaurant on site. You can enjoy a drink at the 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 Southernmost House - Adult Exclusive. Parking is available for a fee.
This 4-star Key West hotel is smoke free.
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.
Property amenities
Internet
Available in all rooms: Free WiFi
In-room WiFi speed: 100+ Mbps (good for 1–2 people or up to 6 devices)
Available in some public areas: Free WiFi
Parking and transport
Parking on site (USD 40 per night)
Limited on-site self parking
Onsite parking includes off-street options
Food and drink
Free continental breakfast available daily 8 AM to 10 AM
A bar/lounge
A restaurant
Coffee and tea in common areas
Restaurants on site
Seaside Cafe at Mansion
Things to do
Outdoor pool
Conveniences
Limited-hour front desk
Guest services
Housekeeping (daily)
Multilingual staff
Outdoors
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.
Grab bar in shower
Grab bar near toilet
Hand-held showerhead
No lift
More
2 buildings
3 floors
Built in 1897
Smoke-free property
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
Coffee/tea maker
More
Air conditioning
Individual furnishings
Iron/ironing board
Policies
Check-in
Check-in start time: 4 PM; check-in end time: 10 PM
Late check-in subject to availability
Minimum check-in age - 21
Check-out
Check-out before 11 AM
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
Information provided by the property may be translated using automated translation tools
Renovations and closures
The property will be renovating from 15 April 2026 to 31 December 2026 (completion date subject to change). The following areas are affected:
Exterior
Renovation work will only be conducted during working hours. Every effort will be made to minimise noise and disturbance.
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.
Rollaway/extra beds are not available.
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:
Resort fee: USD 33.75 per accommodation, per night
The resort fee includes:
Beach towels
Concierge service
Housekeeping
In-room bottled water
In-room coffee
Pool access
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 40 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
Cashless transactions are available
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.
If you cancel your booking, you'll be subject to the host's cancellation policy. In accordance with EU regulations about consumer rights, property booking services are not subject to the right of withdrawal.
We should mention
Pool access available from 8:00 AM to 10:00 PM
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
Southernmost House - Adult Exclusive Reviews
Reviews
9.4
Exceptional
All reviews shown are from real guest experiences. Only travellers who have booked a stay with us can submit a review. We verify reviews according to our guidelines and publish all reviews, positive or negative.More informationOpens in a new window
What a gorgeous property, the mansion is gorgeous and the views were awesome. It was so nice to walk out of the property and enjoy all that Duvall street has to offer without ever needing our car.
This property is beautiful and interesting for its rich history. The cottage rooms are right on the water. Staff is amazing and the breakfast is delicious from local bakery.
Great location. Loved the history of this Southernmost House. I did a lot of investigating for an historical accommodation in Key West, this matched my checklist perfectly! History, architecture, superior accommodations, great oceanfront view and delightful heated pool. Breakfast was top notch and the staff is marvelous and very accommodating. I loved this place, I would highly recommend you will not be disappointed!
Room was nice especially considering the age of the house. Staff was super friendly and helpful. Lobster pizza at the attached bar was awesome! On the quiet end of Duval street so it was very relaxing when we wanted it to be, but we would walk to the other end to explore, drink, eat etc.