We (3 guests) stated at Patrizio's for 2 days. We thoroughly enjoyed our stay. Patrizio is a great host - very welcoming, helpful and good to have a laugh with.
The apartment itself is close to two Metro stations and is a 20 min walk to the Colosseum (roughly). There are also some awesome local restaurants and one pizza bar in particular just around the corner from the apartment that was awesome! Convenience wise, there is also a supermarket up the road (3 min walk).
Overall, we really enjoyed our stay and recommend Patrizio to anyone who is interested. Should we be visiting Rome again in the near future, we will definitely stay with him again.
Dennis