Me and two friends rented this apartment in July. When we arrived we had a bit trouble finding the location, but after some helpful messages with Diego we found it. We did not meet Diego, but we met someone else who helped us check in. The apartment is so beautiful, spacious and very clean. Surprisingly the temperature inside was cooler compared to the temperature outside. We actually had no need of turning on the AC.
The location of the apartment is great. It is placed in the central of the city near famous locations such as the Palezzo Vecchio. The location is also away from the city noise which surprised us. I can assure you that you can get a good night sleep here. Other than that Diego was a great host and responded quickly if we had any issues :)