I stayed with Stefan and his wonderful family for nearly a month after moving to the UK for a new job. Everything about my stay was wonderful. The room is at the top floor of their home, so there's plenty of privacy. The ensuite bathroom was fabulous and very modern. From their home, it's about a 7 minute walk to St. Margaret's station, which will get you to London Waterloo by train in around 40 minutes making it incredibly convenient for commuting into London. It's also about a 15 minute walk either way to both Richmond and Twickenham. The area is filled with good shops and restaurants, and scores of great pubs.
I spent quite a bit of time getting to know Stefan, Heather, and their family and they are really wonderful people. Lot's of good conversation too! They really helped to make my first month in the UK all the more enjoyable.