Fabrizio's apartment is wonderful. You are a couple blocks from a train station with direct connection to/from FCO airport. There is a nearby bus stop where you can catch bus 85 to the Colosseum and other attractions (hint: buy your bus/metro tickets at the tobac/bar on the same square where bus 85 picks up). The apartment is very comfortable, has A/C for warms days and is a great base camp for exploring Rome.