To all AirBnB users :
1. Tom may exist, but this flat is managed by an agency.
2. Late arrival will lead you to additional fees not written on the announce when I booked. Given the absence of notification both AirBnB and the agency were kind enough to find a proper solution, after several requests though.
3. The flat is very nice, well located and closed to central London, with everything you need (coffee, etc...). But this is very very noisy (a highway just below it) and for the price you pay, you could have a quieter place in this city. Just don't go if you want to sleep well, cheaper.