Emanuele is, indeed, a "superhost" (as is indicated on the AirBnB website :). He is very friendly and cares about his guests. His guidance, re the apartment and surroundings, was really helpful. The communication was prompt and efficient.
In particular, I was impressed by two, not unimportant, aspects:
-- the kitchen is equipped with an electric coffee maker, Mocha, which is easy to operate (I saw/used the electric one for the first time)
-- upon my request, for our car for the period of our staying in Florence, Emanuele helped to find a parking space in a nearby garage.