Beyond any expectations, the essence of Florence and Airbnb. It's a brand new apartment in 700-years old building, fully equipped with more than all you need. Furnitures are very stylish, even bed linen refers to apartment's style. In general it's super clean, very(!) spacious and what is important - close by foot to all attractions. Also lots of restaurants within 5 minutes walk and very close to main train station. Maria, the host, welcomed us with bottle of water and made sure we enjoy our stay - she provided an iron on request, as we came to Florence for the wedding.
Little minus is a few stars to climb - it was not a problem for us, but if you have heavy and big suitcase you might have some little workout - well, architects of 13/14th century were not really into elevators :)
To cut the long story short - outstanding place, value for money. I will definitely stay at this place as soon as I am back in Florence. Highly recommended.