It was a nice experience and Sofia was very kind. We had a good communication with her and the flat is located in a quite area. There is a bus station near by and also a metro station (it's named Libia and you arrive there in 10 minutes by walk). And if you want to taste the best pizza in Rome you find it at La Prezzemolina (via del Colosseo, 1E/F, near Colosseum). :)