Great location but is much tighter than shows in the pics. For example the back of couch is at the end of the bed. They clearly moved the couch to take the bed picture. Same with several other pictures. The stairs just lead up to the bathroom, which is good sized.
As others have said it is pretty noisy but quiets down after 10ish. One review said they could feel bed springs, but the mattress now is foam so must be new. Another review complained about the stairs but it's only up one level.
Location is fantastic with access to many sites and three underground stations close by. They also respond very quickly to communications.
Check-in and out is all done through door codes so you don't have to wait for anyone.