The apartment is in a great location, a 15-20 minute walk to the front of the Vatican. It's very clean, secure and a lovely space to spend time in.
The street it's on is busy all hours of the day (it is central Rome!) but it's not that intrusive. Very good bakery, pizzeria and fruit & veg shop downstairs. A five minute walk to the Metro.
Communication from Alessandro was very good, we had a bit of an issue with broadband not working which meant we had to go to the phone shop to try and sort it out. His mother met us on arrival and was very good at showing us around the apartment and with some local recommendations.