Fabio's place is an excellent spot, especially for first time visitors. It's a two minute walk away from Earl's Court station, making it very accessible. The house itself is very clean and provided with many amenities. The kitchen and bathroom are shared for each floor, which should not be too much trouble.
Fabio was very hospitable and made us feel welcome. His notes about local attractions are pure gold. Have a chat with him once you're there and you will surely benefit.
There were a few glitches like WiFi problems and some issues regarding common areas, but nothing major and seemed beyond Fabio's control.
In all, we had a very good time and would ask you to go ahead and make the booking!