Like others have noted Fabio’s place is right next to the Colosseum and close to restaurants and bars. If you are planning to visit the other sites and neighborhoods like Trastevere I suggest taking the metro/public transport since it’s quite a distance in summer weather.
It was great having AC in the summer heat! Only thing to note is that the building is under construction- no noise but plenty of building materials out as you come up and some minor things to update in the apartment. Overall we had a good stay.