Great location, right in the heart of Trastevere. Very close to a lot of restaurants and bars, and a quick walk across the river towards the most well-known Roman sights.
The apartment was a good size, and nicely decorated. Check-in was easy, and Alessandro was very communicative. He even left a list of food/restaurant recommendations. One note that the listing says washer/dryer, but the machine's only a washer, with the drying being done on a clothing line.
Overall a great place to stay.