I really enjoyed my stay at Moira and Barry's flat near Kew Gardens and the British National Archives. Location is right off the Kew Gardens tube stop. The bedroom (2nd floor) was clean, comfortable, and extremely private. Barry hosted a wonderful breakfast every morning and was very attentive to whether I needed anything during my stay. If you're looking for accommodations southwest of London that's still accessible to the city, this is a very good option!