Be warned, most AirBNBs for Italy list "Air Conditioning" when they only provide fans!
The place is at an amazing location and is interesting because of its history.
We stayed in July and it was difficult for someone like me, used to a cooler and dryer climate, to be comfortable. Only by ising the fan to blow in evening air, could i sleep after 11pm. By even 8am it was already getting very hot. However, this is true of almost every AirBNB in Florence and other parts of Italy, too.