We had a wonderfull time at Stefania's place. It is a really quiet place, room enough for the four of us and indeed really close to the tram which takes you in no time to de Piazza del Popollo ( we never waited more than 5 minutes for a tram to arrive). Stefania has given us some good recommendations for restaurants in the neighbourhood and the adress for the supermarket. Bed were very comfy and there is even an elevator in the building! All in all a very good place to stay in Rome.