Paola's apartment is beautiful. The beds were comfortable and the bathroom and shower very good. My in-laws were very grateful for the lift, since stairs were a real concern.
We had a somewhat complicated travel arrangement, where my in-laws were arriving several hours earlier than we were. Simona was very nice to wait for them at the apartment and made them feel taken care of when they arrived. She came over again the following day to speak with me, and see if there were any questions we had about the place. I later texted her about a drying rack for clothes (which she had, yay!) and about a restaurant recommendation. She wrote me right back on both occasions.
I would say that a fan might be a good addition in the smaller room, since if you left the window/door open at night mosquitoes seemed to find you (had no problem with mosquitoes in the other rooms).
The other two rooms faced the street and could be a bit noisy in the mornings - but if you wore earplugs or kept the window/door shut, it was not a problem.
The apartment is very close to a wonderful shopping area where we bought several clothing items (leave room in your suitcase!), and it's very near the river and not far from the Villa Borghese. We loved the location. The plane trees were wonderful, and they lined the street out front. It was a positive experience all-around.