We really enjoyed our stay in the apartment. It is really well located in Trastevere but far enough from the street so you don’t have any noise. Probably it has been renovated recently because everything looks new and works perfectly. It has all you need to stay a couple of days in Rome: good bed with a nice and firm matras, excellent shower, small kitchen which has everything you need for having breaksfast (including a small moka pot!). The location is very nice as you’ll find plenty of restaurants and bars in the surrounding streets. In the street itself you can find supermarkets and butcher shop which sells bread as well.
To get from the airport I can recommend using the regional train from “Roma Trastevere” train station. The train costs just 8€ per person and takes 27 minutes. It is 20 minutes walk to the apartment but there are plenty of buses as well.
Francesco is a very nice host and is very reactive if you have questions !