We were very happy with our stay in Joanna's apartment. The location is absolutely perfect with Portobello Road just around the corner with the market and all the cafés, restaurants and shops. Bus nr 7 stops right outside and goes down to Oxford street. Around the corner on Ladbroke Grove one can find the nearest tube station, a grocery store, a mini-cab company and some take-away restaurants (this all came in handy for us except the tube station).
Communication with Joanna was good and she was kind enough to leave us a bottle of wine and some snacks :) She also left us plenty of towels. We noticed before we went to London that some other guests had commented on the shower but we had no problems with it. We loved the beautiful artwork that's everywhere around the apartment. It was also nice to have a good wifi-connection!