As Michel describes, his place is at amazing location: centrally located, safe and convenient neighbourhood, extremely close to the subway--across the street, 1 minute's walk, and it's right there!! There is a large supermarket Sainbury at the exit of the subway and we almost went shopping everyday. There are also other supermarkets, food stores and a wide choice of restaurants at walking distance.
The apartment is spacious enough for 5 persons to stay. It is also tidy and cozy. There are lots of windows which guarantee excellent ventilation and provide plenty of light. There are 2 bathrooms, and the kitchen is well equipped, though it is a little bit challenging for cooking Chinese food (I am terribly sorry to have broken one bowl...)
Because it is too close to the street (right above actually), if you sleep in the living room's sofa bed, you might be disturbed by the traffic downstairs. Nevertheless, there are no such problems for the 2 bedrooms as they are on the other side.
Last but not least, Michel is a very nice and helpful guy. He answered my questions promptly and clear. It's a pity that we didn't see him in person.
We enjoyed our stay in Michel's place and strongly recommend it to you!