My partner and I stayed at Massimo's for two nights and had a great time. Massimo was a fantastic host who gave clear, comprehensive instructions on how to get to the Airbnb.
The room was clean and had everything promised in the Airbnb description, ready to use.
Please note that the building is undergoing renovations, so the floors directly below the room were quite dusty. You may hear some construction noise, but we were not disturbed at night.
The location was fantastic, with plenty to see and do within walking distance. Most touristy places can be reached in 20 minutes on foot, and Termini station is just an 8-minute walk away.
The room is compact and suitable for short trips, couples or solo travelers.