Karen and her husband Willy were wonderful hosts. From the moment I arrived in London, Karen was extremely hospitable (even going out of her way to find me an alternate route to the house as there were problems on the tube!). The room I was given was exceptionally clean and Karen and Willy made so much effort to make me feel as welcome in their home as possible.
I would recommend staying at Karen's place to anybody and will be definitely bearing this experience in mind when visiting Kew again. Definitely my first choice!