We stayed for 4 nights, in September, and it was perfect!
Great location at the Piazza del Mercato Centrale, with good restaurants right outside the front door, and just a few blocks away from both the train station and the Duomo.
The loft is a clever renovation, on the top floor of an historic building, airy and sunny, with a great view. It was clean, comfortable and well equiped. We loved the brick walls, wooden beams and indirect lighting!
Leonardo was very kind and helpful.
Be sure not to miss the small bookcase in the stairs with a selection of books about Firenze and Italian.