The apartment was in an excellent and extremely convenient location. However, if you are driving into the city like we did, the streets were extremely narrow and busy. If you want to avoid a stressful drive coming in, I would suggest arranging, with Stefano, a location outside of the no traffic zone to drop the car off with someone from the valet parking garage. From there, it could be an easy 10-15 min walk, or a 5 min cab ride if you have a lot of bags. The person who met us with the keys was not Stefano, but probably a coworker of his.
The building is very unique and the apartment itself was clean, cozy, well equipped with supplies and air conditioned. There was also a binder in the kitchen with very useful information about the neighborhood. The wifi that was supplied for the apartment didn't work too well, but I believe that was being fixed on our departure date. We met Stefano when we were leaving, and he was extremely helpful and friendly! All in all, a very good experience.
One very important tip - don't leave the windows open at night. The mosquitos in Florence are brutal. We had to wear bug spray to bed.