I thoroughly enjoyed my stay at this small apartment very near Piazza Navona. Federico, the host, was warm and charming, and extremely helpful from beginning to end. He arranged for a car and driver to meet me at the airport. He greeted me on arrival and gave me a helpful orientation to the apartment, the neighborhood, and the available sources of public transit. He checked in with me periodically during my stay to make sure I didn't need anything.
The apartment itself is fairly small, but very comfortable and perfectly adequate for a single person or a couple. It has been recently remodeled, and all the furnishings and household supplies were up to date. There is a good internet connection.
The apartment is located in Rome's historic center (centro storico), and many famous sites are within easy walking distance. The area also abounds with bars and restaurants and is lively by day and night. Fortunately, the apartment itself is at the end of a blind alley (vicolo cieco) and is extremely quiet. The only downside to its location is that the apartment gets very little light during the day, but for most visitors who plan to be out and about during the day, this shouldn't be a problem.