Stayed here for 4 nights just before Easter. The flat was clean and functional - the bed was comfy - but was overall not very cosy: it didn't particularly make you want to stay in and cook for example. Not that much of an issue obviously as you are in Rome.
However, there were a few issues with the area. One, its a student area (again fine if you are going out to bars etc) but it meant it was very noisy until 1 or 2 am at night with people shouting and playing music.
As a warning also, on the walk to either metro station closest to the apartment at night there is quite a lot of excrement on the pavement and prostitutes in one of the car parks.