David was a great host, with outstanding communications. The place was very well located in walking distance to Harrods, Knightsbridge tube, and key London museums.
The flat has great zoning and facilities.
At the moment of my stay only concerns were - lack of access to the closet (no hangers provided) and many things of the owner still being in several places. Lack of hangers - just uncomfortable, personal things - this just on a personal level gave no sense that you are living at your place (even for a limited time).
But the overall experience was amazing and is definetely recommended - five stars to David and his flat in Knightsbridge!