Bernardo is a lovely host and his apartment is great, right in the centre of Florence. For the 3 of us it was perfect and spacious and we had a wonderful time. There is a roof terrace that gives a wonderful view of Florence.
The only issue we had was the power would trip when we tried to use the oven, but Bernardo replied to our messages straight away and was there within 10 minutes to get it sorted for us.
I would say to bare in mind that although I think you could comfortably sleep the amount of people listed there is only one bathroom in the apartment.