We had a wonderful experience staying at Elisa's flat, which is comfortable and clean, attractively decorated, with excellent amenities. Belsize Park is a great neighborhood, with shops, restaurants, cafes, cool pubs -- and lots of green spaces, including Hampstead Heath. To get from Elisa's flat to the BP tube stop, one walks through a small nature reserve, which (at least when we were there in June) is lush and beautiful. Being on the Northern tube line is also a great bonus, conveniently connecting us with everywhere we needed to go in London. Elisa is a lovely host, and we would definitely stay in her flat again the next time we're in London. 5 stars!