We really loved our stay at John's flat. John was really easy to communicate with and was such a kind and attentive host. He gave us great suggestions for things to do and restaurants to try, and even helped us look up tour information for a day tour we were interested in.
The flat is exactly as described in the listing, and it was very comfortable for all 3 of us. It was stocked with all the necessary supplies (towels, plates, etc) and John even provided some fruit/bread/milk/etc, which was really nice. The location is also very convenient - close to the Kings Cross/St Pancras tube station and there is a large Waitrose supermarket close by as well.
We had a great time and would highly recommend John's flat as a great place to stay in London.