Francisco is a nice host. He will warmly welcome and help to fulfil your needs (as long as reasonable). He is happy to show you around the neighbourhood (or having a cup of coffee in Uxbridge) in the weekend when he is not busy.
The flat is easy to commute by bus from Heathrow airport and at least 4 bus routes pass nearby the flat. Food stores, grocery markets, and other basic shops are within 5 to 10 minutes walk from the flat. Moreover, the flat is located 15 minutes by bus to Uxbridge (222) or ~10 minutes walk to West Drayton Station heading to Central London.
Towel is provided but I think you have to still provide your own shower and laundry amenities. Kitchen utensils are available and even Francisco provides tea bags, instant coffee, and sugar.
I definitely recommend his flat.