Claudia's apartment is located nice 5-min walk from Metro line A station, Ponte Lungo. My wife and I stayed there for two months - an ideal location for either a long-term (more than a month) or a short term (less than a week) stay. A pleasant & safe neighborhood - plenty of grocery shopping options, nice restaurants, away from crowded central Roma, but close enough to reach almost all Roman attractions within 10-20 min Metro ride. The best part of the location was its vicinity (3 min walk) to Tuscolana train station, just 40 min of pleasant train ride to Fiumicino airport (at half the price of Leonard Express & with no transfer needed at the crowded Termini).
As for the apartment itself, it's very well maintained, secure, and super-clean. You would have everything for a nice stay in Claudia's place. She is accommodating, thoughtful, and excellent with communication. Made our stay in Roma so much more pleasant!