Ciro (the host) is wonderful! Super helpful even racing over ('on my motorcycle!') when my husband couldn't unlock the door (don't ask).
The location is fabulous, right over Piazza del Duomo (you can see the famous dome from the Windows, and hear its bells too - at 7:00am!).
It's stated occupancy is 4 but there's plenty of space, you don't feel cramped at all. The kitchen is well equipped with utensils, pots and pans, appliances, spices, and so on.
It's a bit noisy (see location above) and a bit hot when the afternoon sun hits it. But Ciro has provided fans for both bedrooms. The lift is tiny - the apartment is on 4 and after walking the city all day we took the lift when we got back. Our family of 3 barely fit!! So pack light!
But if you're looking for a place literally steps from the heart of Firenze you can't beat it!