We spent 5 nice days in Nicolas apartment.The apartment was clean and quite confortable although is not very quiet, as 2 of the rooms are oriented to a circulated street. The apart is very nice situated, 7-8 minutes walking from White City underground station, 10 minutes from Westfield Shopping mall and 5 minutes from a Sainsbury's supermarket.
The apartment was well equipped, with a nice kitchen.. however something I didn't understand.... no basic things.. why such a very well equipped kitchen without same salt, pepper or some oil or even coffee filters for the coffee machine? We had to buy these, to use it for few times and to let it there...
Another positive thing, Nicolas and the cleaning lady were very nice preparing our stay there perfectly, giving excellent tips for travelling around or from/to airport. One more thing, we really enjoyed the flexibility of our host in the last day, when our flight was in the afternoon.
The conclusion is that I recommend the Nicolas apart, and I would stay there for a future visit in London.