Highly recommended. Gulya's daughter Aliya acted as my hostess and went above and beyond, meeting me at the Tube station AND taking me to a local market so I could buy some groceries. And she gave me advice on using bus 93 (take it south to Wimbledon, not north to Putney) and promptly answered any questions or concerns.
Wimbledon is a lovely area of London--the Common is right across the street, the tennis centre is a 20-min walk, the village and the Town centre have everything you need.
The only note of caution I have is that it takes over 50 minutes to get to central London. I spent A LOT of time on the Tube. If you're going to spend consider time seeing the sights and then going out at night (West End, clubs, etc)