The apartment is lovely; very spacious and clean. Our hosts were professional and responsive.
However, the road underneath the bedroom windows was extremely loud, consistently until 2-3 am. It is a long enough straight-away that the motorcycles and Vespas open up their engines and speed past... all night long.
There is also a set of stairs under the windows that attracts the after-hours club/bar crowd. They were yelling, partying and breaking bottles until the wee hours. This happened each night.
If not for the noise, I would rate the apartment high. It was comfortable and nice. Unfortunately, our inability to get a good night's sleep there overshadowed the rest.