I stayed at Mireille's place for two nights and it was fabulous! The house was superbly decorated, clean, "guarded" by her cat. Occasionally her neighbour would visit for a company. Mirelle would help me carry my heavy bag to the room upstairs, which i found to be very thoughtful. On the other hand, we would delve ourselves into a deep conversation on current affairs, i enjoyed talking to her in exchange of opinions.
Heathrow was a just a few stations away, which prompted me to select this property. The city was not far either, being connected through Piccadilly line. (well, CityMapper app is a MUST while in London) Clearly this was a good choice, though.
The only catch is that the bathroom is located downstairs while the room is upstairs, that one has to commute up and down. But i understand that it's the design of typical British homes.
Highly recommended.