Overall, it was a good stay. A warning first that if you stay here, you will be climbing 75 steps in a steep, narrow staircase from the street to the apartment. This was not clear in the listing. Not for anyone with health conditions that preclude climbing stairs.
The newly installed, updated air conditioner was too powerful and fried a plug while we were out. Owner was very responsive, but it was a hot night that first night. It was fixed the next day.
Great location near the Duomo and short walk to see the David statue.
Bonus is that the place is opposite the huge market building. You definitely need to go in there. Street vendors set up in the square and can be noisy in the mornings, so keep the front window shut at night if you want to sleep.
Overall, the apartment was spacious and is fine as long as you understand the situation going in.