Visiting Firenze for a WE, we had a great stay at Francesca's.
Communication was really clear, with flexible check in and check out times. The flat is ideally located next to the Duomo (as expected with this position we hear the bells from the flat). It is on the first floor and gives on the internal courtyard so really really quiet for being in a city centre. Perfectly clean, and there was everything needed. I recommend and would go back there!