Jacopo's flat is on the 2nd floor of an apartment building, very nice and has an outer gate as well as a locked main door. We always felt safe and secure, and the area was actually quite quiet. We were walking distance (4-5 minutes) from BOTH the Pyramide metro station and the Roma Ostiense train station. There were plenty of food options right around the flat, meaning that we just walked to a different restaurant every evening.
Jacopo was a great guy and very enthusiastic, he obviously cared that we had a great trip starting with his flat. He was always very quick to respond to any message, and even came to meet us at the train station to walk us around the neighborhood.
I 100% recommend Jacopo and this flat to any single or couple or maybe trio looking for an awesome place to stay just out of the city. 3-4 metro stops, plenty of cabs and buses.