Stayed at Ben's place for two weeks. The space looks exactly as described in the photos. That being said, the photos make the place look more spacious than it actually is. I stayed in room 5 which is the tiniest. There's six rooms in total, of which four have their own bathroom. Room 4 and 5 are single rooms and share a tiny bathroom. Due to the frequent moving in & out of guests the kitchen sometimes contains old food from previous guests which can be a bit annoying at times. Also be aware that there's no indoor possibilty to eat. There's a table outside though that you can use for breakfast/lunch or dinner. If it happens to be raining you need to eat in your room.
Other than that the place is well-equipped, mostly clean (apart from some very messy guests) and stylish.
Ben's an attentive host who replies within minutes or hours.
All in all, a good choice when travelling to London!