Federica offers a great room for somebody looking to spend a couple of nights in Rome. It has all of the basic necessities for a great price.
The main advantage for me was the location: right next to the Vatican City, and yet far enough away as to not be annoyed by the torrent of tourists in the streets. The district nearby is filled with great places to eat and drink. And there's a metro station nearby.
Federica herself has been helpful and very quick in communication throughout my stay, so I can wholeheartedly recommend this place.