My family and I stayed at this unique and wonderful apartment for a week. We loved our stay. Apartment is very centrally located with wonderful marble and glass floors (trust the photos!) and high ceiling. Air conditioning worked well, both beds were comfy and we got good night's sleep after walking a lot in this outworldly beautiful old city. Kitchen is well equipped although we never cooked in it: why cook when we can eat to our heart's content without breaking a bank.
It's worth noting that both my husband and I worked this week from home (my husband sat at the expandable table in the kitchen and I used the dining room table) and the internet was fast and adequate. Having a drying machine (in addition to washing) was convenient, especially considering the majority of rental apartments in Italy don't have drying machines (we didn't have one in Rome or Venice). Overall a wonderful stay in Florence's central area. Make sure you don't postpone visiting Medici Chapel till the very last day like we did because it's a stone's throw from the apartment and contains the most beautiful room with Michelangelo's creations you will see in Florence. Also make sure to eat in nearby Trattoria ZaZa that has very tasty dishes.
The only thing that bothered me during our stay in Florence was a cigarette smell but that's everywhere in Italy and I have a very sensitive nose for smell (my husband and daughter weren't bothered as much as I was) so be prepared for that if you are visiting Italy and aren't used to inhaling smoke all the time. But even this didn't prevent my enjoyment of Florence and coming back to the cool apartment in July's heat contributed to our enjoyment of our trip. Thank you, David, for being a wonderful host!