We stayed in the apartment for 4 nights and found it to be clean, comfortable, very secure, quiet,and very affordable.
The area around the apartment is much better than some people have suggested. We often walked the streets at night but never felt threatened. It looks a bit rough, but it seems all the residents have jobs and are focused on live good lives.
The BnB has super Transport links with Rome, there is always a tram waiting nearby.
Highly recommended!