Stayed here as a couple for a few days in July. The apartment itself is simple but serviceable and quiet---very conveniently situated, with all the basics for a short stay. A bit darker than the photos would suggest, and a bit humid, but otherwise what you see in the listing is quite accurate. The air conditioning and wifi worked well. Guido himself was very responsive and easy to communicate with, though we did not interact in person.
The one downside to this apartment was that the older man living in the ground floor apartment (from whom we got the key) often had his door open and seemed to constantly check on our entering and leaving the building. It was somewhat uncomfortable to feel watched (more so for my wife than for me).