Wimbledon is the best place to stay in southwest London. It's quiet, pretty and has lots of parks and good restaurants. Sally's home is very well located in Wimbledon. It's close to Earlsfield station which can get you to Central London very easily. It's also close to various small restaurants and shops.
Sally and Sean will take care of you in an extraordinary way. You'll have great breakfast every day and when you come back at the end of the day, the comfortable and private room will make sure you'll have a good night sleep.