We had a lovely stay with our four children in Massimo's apartment in Trastevere.
The flat is well equipped and the beds were super comfortable, which is quite nice after spending days walking around Rome. My only suggestion would be to bring ear-plugs if, like me, you are a light sleeper, as the street below, although a small one, can get a bit noisy especially on weekend nights when everyone is enjoying the outside.
Massimo is a very welcoming host, responding quickly to e-mails, making sure everything was arranged as we had expected and quick to fix any last-minute glitches. Beyond tips on Rome, he even went so far as to research and suggest places for the remainder of our Italian trip. The luggage deposit is also very convenient in case your check-out time doesn't match your departure time.
Thanks, Massimo, and hope to come back and see Rome again soon!