Luis was an adorable guest making you feeling welcomed. Overall, a decent stay in London.
The pluses are: room is fine, bed isn't so big for 2 but for 1 person it is great and comfy. The location is a very short walk to the tube and buses pass 200m from the house.
The minuses: the building is pretty modest for Kensington, no lift, and bathroom or wc is upstairs in the flat. Not ideal for people with walking difficulties.
I could go back :)