I stayed at Boris' for a three days trip for vacation. The flat is really nice, there's a big wardrobe and the position is very good, in fact you can reach the tube by a short walk and then get everywhere. also the flat is situated in a nice area for a drink or a dinner.
We met the collaborator of the host who gave us the key, calling him on the phone about one hour before arriving.
If you travel by car it's not possible
to park in the streets but you can find a cheap garage in the area for about 10 euro per day