This place is simply amazing! And I can definitely recommend it for any visitor of Kew Gardens or the National Archives!
The hosts are simply wonderful: kind, forthcoming and with a good eye on any needs and concerns. The room is spacious, clean, and has its own bathroom - so allowing every bit of privacy - while guests are explicitly invited to use the kitchen and common living room as well. The best part: the distance to the National Archives: walking distance approx. 3 minutes door-to-door...!
I really enjoyed staying at Atousa's place and would definitely like to do so again at a future occasion.