Our experience by Francesco was really nice. We were welcomed by his girlfriend Sara, and helped us park our car inside the building by taking her car out. This, we appreciate it a lot, because we especially asked Francesco for it. We didn't see Francesco for our whole stay, he was out of the city.
We entered the room and it was as pictures in the photos. Very clean, comfortable and nice. We had everything we need.
The location of the apartment is great. The metro is just 2 blocks away and if you want, you can go to the Vatican by walk in 25 minutes. The neighborhood is really quiet and seemed to be safe.
The only disadvantage is that Sara didn't speak English, so the communication was really limited. For this reason, the house rules weren't clear. One of the reasons of picking this apartment was that the reviews about Francesco were incredible, and that he was very communicative, however, in this opportunity, we felt that we had only an accommodation ( it was great!! ). An example of this is that we arrived last Sunday 29th may, and this is one of the few days that the Sistine chapel is free. Only the last Sunday of each month is free, other days is 16€ per person. Sara told us ( speaking in Italian ), that the Vatican was free, but actually the Vatican is always free. So finally we went to the Vatican that day, and to the Sistine chapel another day, and had to pay. We could have saved that money.
Consider that we speak Spanish, and Italian and Spanish are related, and many word are similar. If you only speak English, you will have a hard time.