I stayed in Iacopo's little apartment for three months while going to school in Florence. It's in the perfect neighborhood - everything is close by. Iacopo was very friendly and helpful when I arrived and readily available, but things went so smoothly I didn't need much help. I think the space is actually bigger than it seems in the photos, and the kitchen was great for cooking meals.
The only downside is the pub right outside, which is great if you love pubs, but if you're trying to sleep expect to need some ear plugs. However, considering Florence's narrow stone streets, this is probably an issue that you just have to get used to no matter where you are.