Location, location, location. James' flat is located near swiss cottage, a very posh and safe area that has easy access to anything a traveler may need: grocery store, pharmacy, Swiss Cottage Underground station which will take you to all the major sightseeing locations in 10-20 minutes or less. The flat itself is also very comfortable with a washer/dryer (cycle stopped before drying but the clothes were dry after hanging them for 24 hrs anyway), a nice bed and a hot shower. James himself was very approachable and courteous. My first trip ever to London (and first time using airbnb) and it was made so much more pleasurable by staying here.