If there was a 6 star rating for a host Stefano would deserve it. He was communicative from the moment my booking completed - sending me a friendly message and making sure to note my arrival times. On our check out day after an incident with our train he went out his way to find a solution for us. He is respectful of your time, thoughtful in his approach and treats his guests more like friends than ends to a business.
When we got there he gave us a quick tour of the neighborhood, walked the apartment with us (pointing out things like the large private terrace) and offered us tips (like the little shop that makes its own pasta - best carbonara).
The apartment looks exactly like the pictures and was clean and felt homey. The neighborhood is quieter than the main neighborhoods of Rome, which for us was a welcome retreat from the bustle, with nice restaurants and a pub nearby. The metro and railway are close (the railway station is down the hill and the metro is a bit of a walk).
Overall it was a great stay and I don't think I've ever met anyone quite as nice as Stefano!