Stayed there for 3 nights recently and I really enjoyed my stay.
Staff are super friendly and helpful. I needed to print out a confirmation email for museum, they did it without any questions. They have 24/7 reception, and staff speak good English. They can also book tickets for you to Uffizi or Gallery Academy (Michelangelo's David) too.
Room is nice and clean (I stayed in room 39, so it is separated from other rooms), and hence it is quiet on the 3rd floor.
the hotel itself is situated along the river, and 5 minutes walk to Ponte Vecchio. I walked everywhere in Florence, and they can call a taxi for you, and it will arrive within 5 minutes.
The breakfast is good too, but I would say don't stuff yourself at the breakfast, but go out to eat pasta, pizza and gelato, and there are lots of good restaurants in Florence! All within walking distance from the hotel!