Everything was great : the flat is very nice, very clean, with many equipments (including microwave, washing machine and Bose loudspeaker !). The location is very good : right at the center of South Kensongton, 5 min walk to the tube station, where you have access to 3 tube lines (direct lines to Heathrow / St Pancras station / Picadilly / Oxford circus / Oxford street / The City, etc.), 10 min walk to museums.
Last but not least, Ian is a very nice host who did absolutely everything to make our stay enjoyable.