Good location. Awesome bathrooms. So-so beds. Also, Costanza was awesome at coordinating and supporting us while we were there.
If this place had better pillows and mattresses, I would have definitely bumped the overall rating to 5 stars. The location is very convenient, but the street below is exceptionally noisy - especially on the weekend - with partiers and loud cars. Our girls slept upstairs in the loft and were shielded from the noise effects, but the downstairs bedroom gets the full brunt of it.
The bathrooms - especially that upstairs shower - are the best I've had in Italy. Great water pressure. Lots of hot water, and that upstairs shower is huge - the size of a walk-in closet. The downstairs bathroom actually has a bathtub, which is also kind of rare here.
You have to walk up 3 flights of stairs to get to it, but that's kind of part of the deal in this part of Florence. The building is probably about 500 years old and two doors down from the oldest pharmacy in Europe (which is also exceptionally cool).
Again - definitely recommend the place to stay, but the host should consider giving the pillows and mattresses an upgrade to make things perfect....and the guest should bring ear plugs for sleeping in the downstairs bedroom.