Both the bedroom and bathroom are spacious and clean.
Breakfast was a wonderful experience: beautiful English tableware, generous supply of both continental and English breakfast, and I like Andy's cooking especially.
We can use the washing machine, and Andy helped us with our laundry.
Wifi is strong.
For those who don't drive, the place is just a few minutes' walk from the train station where you can take the underground too.
For those who are not familiar with the transportation in London, pls note that you don't have to take the railway to Wimbledon. You can take the underground all the way from Heathrow or Liverpool Street Station. This can cut down the cost a lot.
I will definitely stay in Goodenough Guesthouse next time I visit London.