The apartment is in a great location! Super close to the train station, near some restaurants, and is gated so it feels really safe. Chiara is so friendly and gave us some really awesome tips about navigating Florence and good places to eat. We went during the winter, so it can get pretty cold. There are extra blankets just in case, but good to keep in mind or talk with Chiara about if you're particularly sensitive to cold.
If you won't have international data or calling, I'd recommend taking some extra time to coordinate check in. Because the complex is gated, you can't simply walk up to a door and knock. Chiara is nice and communicative, so should be easy to do!