Max place is very well located, we went everywhere in Florence by foot. We came driving, and since his place is just outside the ZTL (Limited Traffic Zone), I was able to drive just near the apartment. Also as we came in the winter, we were able to find free parking places (use the white areas, not the blue ones).
The apartment itself is spacious and overall nice. I believe it deserve some maintenance though. It feels the pictures in AirBnB were taken when the place was just renovated, but it did not age very well since them. For instance the couch in the living room looked a bit old and dirty, the toilet flush required to be pressed several times to work (you get the skills after doing it for a while :), and the overall apartment deserved some deep cleaning.
Overall, it think this is a good place to stay, and would get perfect if the above points were addressed.