What a fantastic place to stay if you're willing to be outside of London a bit! Deborah's place was well situated and had everything we needed for a few nights, even though it was during a heatwave. We had a fan and a decent breeze each night, so we were never uncomfortable (and Deborah offered us ice if we needed--which honestly, we didn't!).
You won't be cooking major meals here, but there are plenty of restaurants around, and if you decide to reheat something from Waitrose or M&S, you're all set with a little two burner stove in the hidden kitchen. The bed was comfortable, shower had great pressure, and it was so quiet each evening--we couldn't believe it since it was near the heart of the town. Rail connections into London are easy; the X26 bus to Heathrow was a breeze. Kingston was a delight to get to know, and we enjoyed strolling by the river. We're big walkers, so we walked to Hampton Court as well as Ham House, each a pleasant 3 mile walk though you can find other ways to get there if walking isn't your thing).
We were so happy to find Deborah's sweet cottage and wouldn't hesitate to stay there when we come back to the area.