Mariangela's place is great. The ceiling is as cool in person as in the photos... The apartment is right next to the train station which definitely made arrival and departure a breeze.
While my husband is a hard sleeper, I'm not so much, so the street noise did bother a time or two (it's the second floor above a well-used thoroughfare), but was never an issue for him.
It's also next to one of the few gyms located in the historical area of Florence that charges $15 for a day pass. Well worth it when all we did was eat and drink, and then eat and drink again and again.