Franka's appartment is in perfect position, 15 min walking distance from Vatican and Piazza Navona. Spanish steps even less, 10min. Bus stop around a corner, and 5 min to very good shop (Piazza Cavur). We spent very nice 4 days during Christmas time. Even you in situated very central, the street is calm (one way). Huge appartment. One step to perfect - kitchen stuff is humble.
Highly recommended for visiting Rome.