I do not recommend this place for a stay in London!! This "summer house" is more a small shack in the backyard, the pictures in the ad are greatly missleading. It smelled heavily of mildew, the bathroom has only a toilet and a sink (shower only in the main house). Not a shelf, hook or anything. We immediately started searching for a new room when we arrived and had to sleep one night which was very unpleasant due to the smell. We had booked for 4 nights but left the next day.
Christian was nice but we would never have booked this house if we knew how it really was.