The apartment is very stylish, spacious and comfortable. Silvia and Felix were super helpful and always quick to respond - we couldn't get the a/c to work and they immediately came and sorted it out, and also booked a taxi for us when we couldn't find a taxi rank nearby.
Comfy beds and nice bed linen made for a good nights sleep. There is coffee/tea/sugar and other basics in the kitchen if you want to self cater, but we didn't bother as there are so many good restaurants nearby. The bathroom was very new and clean, lovely big shower with plenty of hot water.
Location was perfect for us - just a little outside of the busy historic centre, but in a really buzzy exciting part of town with loads of bars and restaurants on your doorstep. Once we had found the right route, it took less than 10 mins to walk to the Ponte Vecchio, and from there you are close to all the main sites and galleries.
The gelateria next door was fantastic and very cheap!
Only warning would be - the 2nd bedroom is above 2 restaurants and there was quite a bit of noise up until around midnight. It was fine for us, as we generally stayed out late, but on 1 evening it was difficult to go to sleep before midnight. But that's the price you pay for such a central location.
Book it - you won't be disappointed!