Only good things to write about the apartment and about the host .
Giovanni was very helpful with some answers to questions we had in advance about the flat and some useful tips about Florence. He replied by mail very rapidly and in a friendly fashion.
We called hime on his phone when we arrived in florence and he was waiting for us at the flat to show it to us.

The flat is perfectly clean, tastefully and modernly decorated and comfortable and spacious. Its main advantage is LOCATION. It's in a quite back ally but only 100 meters or so from the piazza Signoria on one side and from the piazza Santa Croce on the other, 15 minted walk from the Duomo or Santa Maria Novella. Many small places to eat in the vicinity, and quite an active night life in the small streets need by, though the flat itself in quite and peaceful.
The only small problem to point out is that though the flat is listed with an elevator , and this is true, there is a short flight of stairs from the entrance to the elevator (11). This is no real problem as Giovanni was happy to help with the suitcases, but should be considered by someone with a significant disability that may not be able to negotiate the stairs and is dependent on and elevator.
All in all a great place to stay in florence.