If you decide to stay at Pierre's apartment, you will feel like at home. Pierre is a nice person, friendly, easy-going and extremely kind. He will help you in all the practical issues, making your stay easy and pleasant. The apartment is more than clean, the position is very convenient and the room has everything you may need (desk, TV, DVD-reader, closet …).
I would definitely recommend Pierre and his apartment to any tourist, for long or short stays. Shepherd's Bush is a nice neighborhood where you can find everything you need, well connected with buses and underground.
I will definitely go back at Pierre's when I will be in London again.