Alessandro was very welcoming, even when we arrived very late because we needed longer from the airport than expected.
The apartment looked exactly like on the pictures. It's very stylish. The only drawback was that the water was not as hot (and not as long hot) as we're used at home.
The neighborhood was another reason for renting the apartment. It's best located in Rome for short and nice walks to nearly everything. (little shops in the neighborhood as international shopping on the road Via Nazionale). Metro and bus stations are also nearby (we even did not need to switch lines).
Piazza della Madonna dei Monti seems to be an every-evening spot for younger Romans. The later it gets, the more it's crowded and getting a kind of party place. That's really nice. If you want to sleep at "normal times", it depends on you if closing the window is enough. We might have a good sense of hearing and made good experience with earplugs made of silicone (e.g. wellnoise).
So there's no showstopper for the apartment. It's nice and we can recommend.