Had a 3-nights stay here.
The studio is not very spacy but everything is available within it. Bed, pillows, cups, bowls, air-conditioner etc. You name it.
The best part, of course, would be the bathtub. Bath bombing session would be awesome after a long day touring around London.
Other than that, the studio is near Chinatown (on one end) and Oxford Street (on the other end). Convenience of course ! What more can I say?
The biggest downside would just be the pubs downstairs. Other than that, everything's perfectly fine.