This is the kind of comfortable two-star experience you like when you do't intend to spend much time in the room. I'd recommend it highly on that basis.
Staff was very friendly and helpful (if a bit busy). Room was clean and orderly, nice decoration for a two star and quiet when the window was closed. The nearby shared bath was bright with nice fixtures and kept clean. The location was perfect--near St Pancras station and a lot of nice eating places, but not so near the bustle becomes intrusive.
The only drawbacks were that the room was in a building separate from the main desk and down a winding set of hallways, stairs, half-steps (AKA trip hazards) and low overheads in the basement. If you are at all mobility compromised, it might be difficult, especially with bags. Staff was very kind to help me carry my bag without my asking.
Also, because of the basement location, street noise was a bit intrusive late at night when the below-pavement-level window was open, which was necessary because there was no AC.
Still these factors would not in any way prevent me from staying here again. Recommended.