Cinzia's place is neat and clean, and Cinzia is easy and quick to communicate with - all important, positive qualities. It's also interesting to be on the 'other' side of the Tiber, and for seasoned visitors it will be a chance to see a new part of the city, even if it is not convenient due to the lack of a nearby metro stop.
On the negative side, there are two main issues:
First, the space itself is less optimal: There's not really two bedrooms as advertised, but instead just one bed, on the mezzanine loft (with very low ceilings - you can't stand up and -will- hit your head); the other 'bed' is a pretty miserable couch in the open room below - meaning that there is little privacy and even less comfort.
Second, the space is pretty clearly one of the 'made-for-rental' spaces that has seen Airbnb be a destructive force in many cities; while (still) legal, it's undesirable and makes for a very bland experience (made worse by 10+ tacky signs reminding you what to do or not to do.)