We enjoyed the stay at Enrica's place very much. The distance to the city centre is easily manageable if you take bus or metro. It's located in a real italien residential area, so the resturants around are really nice and not expensive at all.
The room has a very modern touch to it, which we really loved. The only thing is that humidity doesn't get out of the room as easily, but that's due to the fact that it is an old house built out of real stones, we didn't have a problem with it at all.
Overall a great stay and I would totally recommend to spend your time there, while in Rome!