All in all I had a good stay at Breditz and Nadja's place. The bathroom was very nice and clean and the kitchen was equipped well.
I got to take a map of Florence which was very useful! The room is very quiet (as long as the people in the other rooms aren't too noisy).
The location of the apartment is unbeatable, it is very central and getting there from the train station was easy as well.
The free breakfast in the cafe wasn't much but it was good, just found the people working there rather unfriendly.
Also had to wait for quite a bit for the host to let me in even though I arrived right on time at the arrival time I told them.
The room itself sadly is quite dark and there isn't much natural light, also letting some air in was a bit complicated as there was some sort of balcony garden thing from another flat with lots of plants in front of the window - there also was no AC. The bed wasn't too comfortable but all in all it was alright for my short stay.
If you just want a nice place to sleep while you're out all day exploring Florence it is quite a good place as it is so central and overall everything was alright!