Location: this place was perfectly located next to the duomo. From here, we were able to walk to all the beautiful sites Florence has to offer. In fact, the only time we used public transportation was for our day trips to nearby cities. We walked to the train station from the apartment.
The apartment: Typical smallish apartment. Has 2 good sized bedrooms, each with a bed big enough for two. The third bed is a pullout couch in the living room. AC unit throughout. There is a very small elevator that services the building-- fits 2 max.
Safety: Florence overall is very safe. The neighborhood where this apartment is located is also very safe. My wife and I had no problems or issues walking all around the city at all hours of the night.
Support: the folks who own this place live right. Ext door. They were very helpful. We felt free to text them at all hours of the day, and they always responded promptly. No issues whatsoever.
I would definitely book this place again. Not only was the apartment great, Florence itself is magical.