We really enjoyed our stay at Lorenzo's lovely apartment. It was very secure, the AC was comfortable, and the neighborhood was great with easy access to Central Rome (if you don't mind taking the bus, which we didn't!). The evening time in Pignetto is really special, with lots of energy and restaurants serving tasty food-we really felt like we had a small and less touristy feel to come home to after a day in Central Rome.
Our hosts were very accommodating and kind about checking in early, and provided us with lots of information about restaurants and the neighborhood beforehand and during the trip!
Overall great experience!