We had a wonderful stay at Chiara's. We were two couples, one baby, and Chiara and Bernardo were so accommodating and sorted us out with a crib, high chair and even some toys!
On our first night, there was an issue with the boiler so we had no hot water, however our hosts were wonderful at getting this sorted and by 9:30 the next morning (a Sunday) everything was fixed with a bottle of wine to apologise.
One slight minor is the noise in the front two bedrooms. This is not a huge issue if you're used to city living, but would recommend ear plugs for a peaceful night's sleep, especially at he weekend.
All in all we had a fantastic stay, the apartment is so beautifully decorated and it was great to be able to walk to all the main sites of fantastic Florence. Chiara and Bernardo were brilliant at keeping in touch and helped us with arranging a taxi when we departed. Thanks so much for a wonderful holiday!