We had an incredibly comfortable stay at Paul's. Paul is a very thoughtful and generous host. His well appointed apartment is easy to get to from Heathrow (take the Heathrow Express to Paddington station, which is a stone's throw away). Public transport is close by and plentiful, as well as good food options. Kensington park is a 5 minute walk away, which is lovely to spend a quiet afternoon in.
Highly recommend staying at Paul's.