Great place to stay. We used Raynes Park station which is an easy walk, with quick/frequent trains to Waterloo.
Booking / communication with Kerstin was very friendly and straightforward, and John was very friendly and helpful at the house.
The house is great, and feels very much like a home, with lots of furnishings and paintings. And as others have said, Hunter the cat is good company!
I’d certainly use the house again as a base for a London trip.