Fantastic host and an outstanding location! Emma was super accommodating (letting us into flat after long overseas flight a few hours before scheduled check-in time; providing new umbrellas for walking around; working with us when we had to change our plans; etc). And her place is on a cool pedestrian-only street in a terrific neighborhood (walking distance to groceries, retail, restaurants, etc), <1 minute from the Bond St Tube station, affording easy rail access to/from LHR/LGW and to all noteworthy destinations in and around London. Highly recommend!