We stayed at Andrea's place for 10 nights and had a great time! The apartment isn't very far from the Termini station and he will give you all the details on how to get there. After a short waiting time in the living room, he came to do the check-in and was very welcoming and immediately gave us great tips on what to do and where to eat! Even during our stay he continued to inform us about events nearby. There are lots of students in the San Lorenzo quarter which makes it quite lively and a place to party as well.
Supermarkets and bars are nearby and the tram station is right across the street, although it wasn't very reliable and we often took the metro which is about a 10min walk away.
Now the apartment... It's absolutely stunning and exactly like in the pictures! The design is amazing and with great attention to detail. Everything is well-organized and clean. Cutlery was a little scarce in the kitchen, especially sharper cutting knives, and sometimes it happened that other guests accidentally took those to their rooms (which is obviously not Andrea's fault).
In general, I would definitely return to this apartment :)