Paolo's apartment was perfect for our 6 day stay in Rome. We usually stay in the Piazza Spagna area, so Paolo's neighborhood, very close to the colosseum, circo massimo, the pyramid, the protestant cemetery, and the churches and monasteries of the Aventine, was a refreshing change. It is very near two subway stops (piramide and circo massimo), and many buses and a tram run by within a few minutes walk. My daughter and I had a morning appointment with the admissions office at St. Stephen's school, and the apartment was about 8 minutes walk from the school, which would make it ideal for visiting parents.
The apartment itself was spacious, tidy, almost completely without personal effects on the surfaces, and recently renovated. The street had many large trees and is cool and quiet. The air conditioning in our bedrooms was efficient and silent.
As for dining out and conveniences, Eataly is about 15 minutes walk away (we took an evening cooking class there and brought home a lot of great dishes we had prepared), and the restaurants of Testaccio, a neighborhood only a few minutes walk away, are highly recommended.
Paolo was very responsive to our concerns and requests, and his parents greeted us very graciously when we arrived, opening the apartment a little early for us, a Godsend as we were exhausted from a 4:30 am ferry trip from a far away island. There is an elevator which we used only for the luggage, as the apartment is on the second floor, but anyone with mobility issues could use it as frequently as necessary.
I should add that for the last night my two younger children arrived after a visit to family friends, and the two little ones slept comfortably with my older daughter and me in the double beds. Therefore, I feel it would work fine for 2 couples, though the second bedroom is naturally smaller with less space for clothes and suitcases.
A really nice stay for us, thank you Paolo and family!