I stayed here with my 4 other friends during our interail trip and greatly enjoyed it.
The area is excellent, and I felt very safe walking around there at night. It is a stones throw away from the metro and a small supermarket with all you need for a few days. The street leasing up to the apartment is in complete darkness (we presumed the streetlights had stopped working) but despite our initial worries the apartment is in a safe area. No one harassed us, even when we were carrying big bags and were obviously tourists. It is very much where the people of Rome actually live.
The beds are comfy, the kitchen well stocked with appliances, and the balcony was very nice to sit out on. When we had issues with the keys the host came out to help us with the issue. The only detractor is the bathroom door, which was a little flimsy but the bathroom itself was nice.
Overall, would reccomend for someone wanting to spend a few days in Rome!!