The property is spacious, quiet, with lots of old-world charm, and convenient to local and regional rail transportation.
The place was mostly very clean, though we had issues with one of the bathrooms. Fortunately, there's more than one bathroom!
The value for money vs. our other AirBnB stays in France and Italy was good. Don't overlook Marco's recommendation of nearby restaurants - the first one we tried ended up being the best meal of our entire 12 days in Italy!
As others have noted, the WiFi is slow by modern standards. OK for one or two people, casual browsing/email, but don't count on streaming video, or rely on it for remote work. It's just a portable 4G WiFi hub inside a heavy stone building - never going to be ideal, possibly the only option available for them? But it's not why we were there anyway.
Note the elevator goes only up to the floor below the apartment itself. Then you'll need to install a smartphone app to operate the door lock.
Overall: recommended