The flat is located in a residental area so it's very quiet at night. Public transport is also pretty nice for Zone 2/3. David's and guest's rooms are in two different parts of the flat with the bathroom and kitchen between them, so you shouldn't cause too much pain to the host's privacy. There is a lot of space for your own stuff in your room. Dave is friendly and knowledgable. If you come to London not knowing much about it, I'm sure he'll be more than happy to help. A really pleasant stay overall, would recommend.