Viviana’s place in the San Lorenzo neighborhood is a great place away from the tourist hordes. It is a spacious apartment and a good value. You may find yourself using the bus a bit more than if you stay in the touristy zones, but it is easy to get around. Walkable from Termini.
The area has lots of bars, osterie, and street action at night, but the apartment has windows onto the courtyard and stays relatively quiet.
Viviana is very responsive and her mother Claudia is a charming and welcoming greeter. I would stay with them again.