I stayed with Max & Billie one week last August and decided to return now one week in November (in another studio, within the same building). This time I was on the upper floor (4th) - easy access but be fit if you have heavy luggages (many stairs). Overall the building/appartment is in a quiet residential area, walking distance from the tube station and a few steps from Kensington Gardens and Hyde Park. Very convenient keyless access via the phone app and all instructions very clearly communicated. Max & Billie are fast responding and are very reactive if needed. They also offer to store your luggage before check-in time or after check-out time if needed. The appartment is small but enough for 1 person and with all the equipment needed to relax or to work (table, chair, wifi,...). You can hear sometimes the noise of the neighbours' door but this is not too much disturbing. I really recommend staying with Max & Billie, and I will definitely return!