We had a very nice time in Rome! The apartment is only a 10 minute walk from Termini train station, so it's easy to get to and from the airport with the airport express. Not the most exciting area, but in walking distance of the Colosseum, Monti and San Lorenzo.
The place itself is nice, but if you're sensitive to noise maybe this isn't the place for you. Even with the window closed you can hear all the traffic outside, and ambulances at all hours of the day. Luckily all four of us are heavy sleepers. :) There is no common area except the kitchen, but we were out most of the day anyway, so it didn't really matter. Communication with Riccardo was easy, and he gave us lots of tips on what to do in Rome. Check-in and check-out was also quick and easy. All in all we are very happy with our stay. :)