We had great time while staying at Mark’s apartment. Clean, nice room with everything we needed. Located in great neighborhood that will allow you to feel the mood of common life in London.
However it was cold in the room sometimes, because window isn’t closing tightly. But good warm bed fixed this issue. There was some problems with internet couple of days. And we had some problems with understanding how to deal with hot water. If this small issues don’t bother you, then it’ll be a good choice for your stay in London.