Perfect location, extremely clean, spacious apartment in a nice building.
The location is key, as you will be able to walk to many sights (also Termini train station). One thing you should know is that it gets loud at night (busy street), so I would *highly* recommend you get earplugs for the night, at least as far as Saturday/Sunday nights are concerned. This was *not* a dealbreaker for us, as the appartement was very comfortable and the mattress great, but if I had known that before I would have purchased earplugs which would have made our stay even better. The host was very nice and greeted us with bottled water and Prosecco :)