I had an excellent stay with family at Sonia's apartment, we really felt home, without any single problems.
They are very friendly hosts and we were very well introduced by Paolo for the area and general tips for Rome. The apartment is very clean, the rooms and bathrooms are large enough and kitchen is fully equipped.
The location is perfect as the bus directly takes to center in 10 minutes. You are also in 15 min. walking distance to Vatican, so we preferred walking to city center in the morning and used bus on our way back. I would deffinitely stay again.