I had a fantastic stay at their warm and cosy home! It felt like visiting old frieds who are giving you not only a bed and breakfast but also their heart and wonderful company. Everything there is up to highest standards and Southfields is one of most beautiful towns in London - its like little village but with the Tube station, Wimledon tennis courts just a stone-throw from it and its maybe 20 min from Central London.
There is one danger though. If you're tourist and you have never been in London before, home atmosphere at Mauro's may tempt you to stay home with them all the time and skip everything else ,-)).
Anyways, I highly recomend stay at Mauro's to everybody!