Elena's apartment is a nice, spacious place in a typical roman neighbourhood with shops, supermarkets and restaurants nearby. Several buslines go to the centre as well as tramline 3 (Trastevere) en 19 (Vatican). But also by foot, through the Villa Borghese, the centre is within easy reach. So if you want to stay among the Romans, but stil close to the historical centre, this is the place to be.