Andrea was a very nice host. He waited for me after my flight was delayed and gave me a tour of the apartment. The apartment is a good value for the price, despite a few things that could be improved. The bed was comfy, and the AC and the washing machine were a nice bonus. It's close to the train stops and 20-25 walk to the Duomo and the city center. Restaurants and stores all around. Know there is a bar downstairs and another one across the street, and they play music until 10 pm (maybe later during the week-end, not sure). With the windows closed and the AC on, I barely heard it, but it's sometimes nice to have the windows open. It's also on a roundabout, so expect some traffic noise.
The one thing that really bothered me in the apartment is the shower. It's made out of 2 walls at a 45 degree angle and super small. I'm 5'5 ft and 140 lbs and I kept knocking my elbows on the walls and touching the shower curtain, which had orangey soap scum at the bottom and grossed me out. Otherwise, I had a great time in Florence!