My wife and I spent three nights at Domenico's apartment.
Domenico was always available, and provided us with all information needed for our stay (how to reach easily the apartment, to use all the furnitures, etc...).
The apartment was very clean and perfectly located, with the main monuments, places to visit, restaurants and supermarkets within few minutes walk. The apartment was also surprisingly quiet knowing that it is located in one of the main street of Firenze.
We highly recommend this place.