As others have said, this is a great value and has good proximity to Tube/train and coach. It's centrally located on the Victoria line so getting around London is a snap. We also liked taking a walk down Ebury St. down to the Sloane Square Tube station when we just didn't feel like dealing with the bustling crowds at Victoria.
The caveats are these:
If you don't like dragging heavy luggage up a steep, narrow stairway, you may want to seek ground floor accommodation.
There is little variety in the breakfast, though as others have said, the full English breakfast is hearty and will keep you until the next meal...easily.
The coffee/tea service in the rooms could use some decaffeinated option. My wife loves to return to the room after a busy touring day for a relaxing cup. Unfortunately, she wasn't able to do this here.
If bathroom privacy is important, stay somewhere else. Our bathroom door was a louvered affair which kept none of the sounds or smells out of the bedroom. From reading other reviews, I believe this is a universal feature of all of the rooms.
If you have non-Apple technology, you're best off staying on one of the lower floors. Derek has tried to accommodate wi-fi users on the upper floors by installing a repeater part way up. Unfortunately, Windows hardware can't handle this situation but Apple hardware does. I was able to receive my mail on my iPhone but my laptop endlessly sought to acquire a network address. Once I walked my laptop downstairs, however, connecting was a snap for my laptop.
There is nothing to be done about the narrow, steep stairway. Building codes in this historic district prevent lifts from being installed.
If you can live with these caveats, this is a great place to stay for the money.
Derek and Sharon were aces!
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC