It was amazing. Very clean and modern flat, especially the Bathroom and Kitchen with washing machine and towels. The AC worked good over night. The flat is in the city center, a few Minutes away from palazzo pitti and Ponte veccio. Perfect location for sightseeing.
It's in the 3rd floor without elevator.
Francesca left a little map with tipps how to explore Firenze, that was really nice. Also she left little notes how to checkin/checkout, how the safe works, a.s.o., so everything was clear and well explained.
There is nothing bad to say, honestly.
I would ever come back and stay here. I'm so happy that I booked it. :)