We had a wonderful stay at Breditz and Nadia's place. The location is great, 5 minutes walking from the Duomo and 10 from the Ponte Vecchio.
The room was clean and very spacious. As it is in the heart of Florence it can get a little noisy in the morning when the city wakes up but we guess its what you get from staying in the center :).
We would definitely recommend this place to anyone!!