Very nice place, close to Florence center. Communication was very good as well, the guy at Keys Of Florence gave us a lot of useful informations and tips.
One thing to keep in mind is if you come by car, like us, there is no parking on the street and you have to pay 20 € / 24h for a parking lot, which at least is just around the corner.
Plus the little "terrace" is basicaly unusable, since it is just a light well, where all the aircons of the upper apartments stay, so it´s incredibly hot ans sticky.
We would stay there again at any time!