For start I would like to sum up Lorraine's place in one word - amazing.
The neighborhood:bus station for Richmond/Kew is just around the corner while the train station for Waterloo (Central London-40ish mins travel) is about 5 minutes on foot. The X26 bus from Heathrow airport is by the train station and is an excellent connection between the airport and the flat (30 min). Don't be discouraged by the 6th zone position, the connections are really good.
There is a big store (Sainsbury's) at the end of the street and also a lot of restaurants and stores nearby. We found an amazing live music pub (RamJam@Kingston) as well 2 minutes from the flat. Next door neighbors are helpful and friendly.
The flat:pictures are accurate and the house is even more beautiful and cozy in real life. There was plenty of room for the 4 of us and it felt really homey. Bedrooms have really comfortable beds and a lot of space.
Unfortunately we didn't meet Lorraine in person because she was on business away but she took great care of us remotely and met to all of our needs and expectations.
If you like cozy homey feeling we would strongly recommend staying at Lorraine's:)