I stayed at the apartment with my partner for 3 nights.
The location is superb - so central to all the main attractions in Florence, and a 15 minute walk from the central station that we arrived at. Also only a 5 minute walk to a supermarket.
The apartment was missing a few furnishings in comparison to the photos e.g. pillows, rugs, blanket. The kitchen has also been changed slightly - with the addition of a sink (which is a positive).
We found the apartment clean and fresh. The air-con worked very well - which was essential for mid-august.
Communication and check in was very easy. The person who checked us in sent us several restaurant recommendations in the local area.
There is a little private terrace which is nice. Although there is an even better shared terrace on the rooftop which gives exceptional views of the city. Although be careful - there is one very loose step.
The kitchen does have all the basics, although is you are staying there for longer and intend to cook frequently you may need more cooking equipment.