From the beginning, with the car service Francesco booked for us, to the end, everything was perfect.
The apartment was very clean, and is ideally situated. A few steps away from Santa Maria in Trastevere.
Most of all sites are situated at less than 30mn walk. Campo di Fiori and Piazza Navona are both at less than 15mn.
The surroundings are quiet (for Trastevere anyway ;) ), even at night. Maybe you'll hear some noise from the restaurant in the street from time to time, but nothing really annoying.
This was a really great stay ion Rome, and Francesco is a very kind host.