I spent two days at Judith and Tim's place with my 15yo son. It was our first airbnb booking, and could not have been better.
Despite the fact that I tried to book on the day before our arrival, they were always helpful and welcoming. It was great to have their recommendations for restaurants, or transport, but it was also great to stay there, just talking to them.
We haven't had dinner with them, but Tim seems to be an actual chef. Oh, and their girls are lovely. Will definitely come back when in London.