We had a very good experience staying at Catherine's flat. The flat is comfy, clean, and has all the necessary amenities. Catherine was very welcoming and helpful. You should take into account that the flat is on the third floor and there is no lift. Other issues were the water pressure that was very low and the heating that is not very strong. The flat is located at St. John Wood, 30-40 minutes drive by bus from center London. The bus station is right by the flat - which is very comfortable.