My grandma invited my sister and I to Florence, we stayed in that hotel and here are our different thaughts:
Some of the rooms have beautiful frescos and the sensation when waking up in these rooms was delightful.
Location is perfect, very central and in a rather posh street.
Angelo, one of the receptionist was absolutely welcoming, helpful and agreable.
The fourth floor has a terasse overlooking the rooftops of Florence: great view!
Its a cosy, not impersonel hotel so its perfect if you dont like huge chain hotels.
However the breakfast was extremely disappointing, internet does not work except in the tiny bar.
If you dont like the proximity with the street, you may find it a little bit noisy specially in the late evening and morning.
Finally the style is oldish, and not a lot of young people stay here.