Filippo' place is great. After a very long flight, the firm mattress was just what my back needed! After a rejuvenating nap, my wife and I walked an extremely short distance and realized we were literally next to Trevi Fountain...but you could not hear the enormous crowd from the apartment (which was excellent). The apartment is within walking distance to so much (Colosseum, Roman Forum, Plaza Navaro, Plaza Venezia, etc.) and there were no shortages of nearby restaurants or gelaterias.
My wife and I really appreciated arranging a driver through Filippo, too. We were picked up from the airport and taken directly to the apartment and when we left, the driver arrived promptly and took us to the airport, straightaway.
Great trip, great apartment location, and easy arrangements.