Claudios place is great. We stayed for 5 nights. It's right in the center of Rome, theres bars, restaurants, cafes, shops all on the doorstep and every major tourist site is within walking distance ( Colosseum/Roman Forum 25 min, Vatican City 20 min, Trevi Fountain 10 min ), The apartments also a 2 minute walk from Piazza Navona.
The apartments nice and clean and the bed is very comfortable. The shower is small as mentioned in other reviews so if your a bigger person it probably won't work for you. Wifi speed is also great ( ~50mb/s ), there is no phone reception in the apartment though just to note even though it wasn't a problem for us!
Claudio himself is probably the nicest AirBnB host I've ever had, he arranged transport to and from the airport for us, greeted us in person at check in/check out and gave us loads of helpful tips about Rome. 100% would recommend and would stay here again/