Great affordable place near main train station. Though it is not close from city center and attractions it is well connected. You cam get to the fontana di trevi in 20 min (walking + metro).
Lucia is a great Host. Responds within minutes for check in and if anything is missing she will help immediately.
Though The apartment is small you will mainly be there to sleep. It is a bit noisy because of the trains but windows are good at
Isolating the noise.