Great apartment! It's 2 blocks to St Croce and very central to the rest of Florence. Altier Classe (an amazing custom leather shop) was a few doors down and after shopping around, we ended up buying 2 custom fit jackets there for a reasonable price. These jackets will last us a lifetime! (Talking type of leather, style, length, lining, everything!)
As for the apartment, it's clean and spacious. A fully stocked kitchen is there (that we didn't use because we ate out everyday). The only thing that might be an issue is that it's on the 4th floor so pack light and if you're older, you may want to choose a place with less steps to climb. Also, make sure to keep the windows closed otherwise the mosquitoes will get you!
Mr Lombardi (who gave us the keys was a sweet old man that I couldn't understand at all) was awesome.
Highly recommend this place and would stay here again.