Simone's apartment is perfect!!! It's really big compared to most apartments we have stayed in in Europe! It has the number 3 tram right out the front door to take you into the colleseum. Which was very helpful. The car park is very secure with a key locked gate and it's very big, and the apartment isn't to hard to get to from the autostrada. (we were worried about driving into Rome).
We ate dinner and ate gelato at the three places simone suggested: eataly(at Republica), pinsa and buoi (30 metres from apt), and the oldest gelato place fassi 1880. All were amazing (10 minute walk). There is a large amount of people living / staying above the apartment, so it was sometimes a little noisy, but went away after 11pm(we were never in bed before then anyway). Despite that we highly recommend staying here, especially if you have a car!!