I stayed here for about a month.
So first off I would like to say that this is prime location if your are just touring the city. You literally look out the window and to the right is the ufezzi and look out and up to the window you see Palazzo vechio.
The owner is nice, but very busy. So make sure you feel comfortable with everything before he leaves. The restaurants below are owned one by his family and one is his own. But even ask about what do when the lights go out. I was left without lights for 6 hours. I had sent him a message early morning he read it and never responded. I figured it out myself after one very strong shock. So be careful. After I sent him a message saying thanks a lot all he had to say I'm sorry I'm in Spain.... I was like well you still could have offered some sort of help or hey send me a picture so I can tell you what to do nothing. So really ask all your questions.
This place is noisy in the evening so if your a light sleeper good luck. But I was ok with this.

I also recommend more of a short stay rather then a long stay. As I was there for a month but found it was very dirty. Right off the bat when I opened the fridge it smelled. And then I found several spoons with lipstick on them. I have pictures. A lot of uncleaned dishes that were put away. So make sure you was before using anything. Also doesn't have a full set of cutlery.
Also the closet had this weird oil all over the place that smelled and had to clean that too don't know if I got it all...
All the drawers were filled with clutter and other stuff that I moved down to the last drawer.
A lot of the appliances weren't working like some extra fans. There's just a lot of clutter that needs to be cleaned up.
And the shower drain doesn't work well. So when it doesn't drain it makes this gross residue that's pretty thick and it's visible. Putting ammonia does t solve the problem which is what the Alessio had suggested.
So yeah short stay is best.