I’ve just spent a night in the apartment. It is very well positioned, in a central area with major attractions really easy to access. Close to a supermarket open 7/7.
The flat is basic but clean, with a well-equipped kitchen (light breakfast available). Bathroom is a bit dark, though.

It is definitely not a place for people who are sensitive to noise (day and, most of all, night), but quite comfortable otherwise.

Astrid was kind and she provided all necessary information. She spent the night in the apartment but she was very discrete.

Just a note, in case of long stay, make sure you take into consideration additional data roaming costs due to the fact that there is no Wi-Fi connection available in the apartment (you can connect to the free Wi-Fi of Florence municipality from many spots around the city, but not in the apartment).