We had a wonderful time here! Testaccio is the perfect neighborhood for a few days in Rome -- 10-20 min tram/bus ride to all the major attractions including Vatican, walking distance to Trastevere, and the neighborhood itself is cute, non-touristy, full of places to eat and shop, and best of all, quiet. Just make sure you book reservations for all the places you'll want to eat ahead of time!
The place itself was perfect with quick WiFi and strong AC, very clean, no complaints! Laura was a terrific help and easy to communicate with during our stay.