Nicoletta and Salvatore gave me very precise informations as soon I did the reservation, and then before the arrival and before the check-out. The flat was clean and very convenient, as expected. We didn't use the kitchen (there are so many good places to eat in Roma!) but everything was in place in order to cook, and having a private bathroom was pleasant.
The location is very central, it was perfect to visit the entire city. From there you can easily walk to the Colosseo, Foro Romano, the Aventino, and even to the historical center. You're also very close to the Train station Termini and the metropolitan if you prefer.
I highly recommand this appartement and would come another time with pleasure!