I will start by saying that this apartment is in a great location, easy access, very clean and modern. That being said, my wife and I were definitely disappointed with our stay. We were using AirBnb so we could experience Florence through the eyes of a local, and this place is simply a property that someone rents out for AirBnb- they clearly have not lived in it. There are no clocks, there are no extra sheets or towels of any kind, and while it is modern it is very bare bones. Niccolo does not own the place, he is a property manager and could not offer us help when we asked how the washing machine works. Eventually we wanted to cook breakfast and could not get the stove to work, but we had no one to ask because he clearly didn't know how things work. When we checked in Niccolo told us that the next day, in the middle of the day, someone would be coming to do an assessment on an issue they had with the place - since we planned to tour we felt uncomfortable leaving our stuff out, but there was no safe and we didn't have any choice.
If you are simply using this as a home base in a good location with decent a/c and water pressure then this is a great option. For what we paid and what we expected we were disappointed.