Small, but well appointed studio apartment. Very tidy and nicely laid out. Outstanding Internet connection.
A little out of the city center ~ maybe 20 minutes by bus (to near Colusseum) probably less by subway, which is also nearby, although we didn't try the subway ourselves. Overall, well connected, with no changes required to get into town.
Garbatella is not the prettiest part of Rome. But being just a little out of town had other advantages~ very convenient supermarket and restaurants across the main street offering good local food at local prices (7euro for full buffet)...
Simona had the fastest Internet connection we've experienced during our stay in Italy and was herself super responsive to any questions etc, always answering our texts etc within minutes. She also laid on some nice extras such as a welcome bottle of wine and other tidbits on arrival.