We enjoyed staying at Sabrina's place. It is in a very nice and cosy neighborhood, with supermarket (very nice fresh food!) very close by and a restaurant. We felt a bit like we really lived in Rome. It was good to get away from the touristic places.
Sabrina replies immediately to any question, so that was really helpful. Her father Enzo was also really helpful picking us up with his car. We loved our stay in Rome. It is a fantastic and beautiful city.
Public transport is needed to get to the subway. Buses 985 brings you to Battistini and 981 to Cornelia. Metro tickets work on buses as well. It is best to buy a 24 or 48 hour ticket. Make sure you also have coins (1,5 euro per ticket) to get one way tickets if needed because not all ticket machines accept credit cards and some do not accept 20 euro bank notes. You cannot get tickets on the bus, you get them at metro stations, or at some shops.