We had a lovely stay in Firenze.
Biggest assets are certainly the location (really close to the train station and center of the city) and the airconditioning. We were there in the middle of a heat wave so this was certainly welcome.
Room itself was also very clean.
Biggest 'inconvenience' was the fact that the private bathroom was not in the room itself. You have to walk through the shared area to get to your bathroom.
In the shared area there is a little space where you can drink some tea and water. It would've been nice to also have a small minifridge to cool some drinks.
Would certainly recommend this place to other potential guests.