The flat's location is great. It's a little outside from all the tourist places but yet so close, it's easy to get anywhere by underground or bus. It's clean and very warm and its spirit as British as I got to know British flats / housings in the past (cosy, small but not overcrowded).
The room itself was big, serves for two and has got lots of room for clothes.
Sonny was very obliging and a nice person to talk to. He had helped me out in any case if I needed it.