We can only recommend staying in Hyde Park 3, Rafael's apartment. The communication was great, even when w booked last minute and had problems with the booking system, Rafael was of great help and answered super quickly.
The apartment itself is wonderfully furnished, equipped and clean. There is much attention to detail which we appreciated a lot. Everything was like on the pictures and even better.
The location is amazing. Most of top sightseeing highlights are in walking distance and the 2 different tube lines connect you to all points in London quickly.
Top stay!