Leonardo's place was great. It's in a really good location across from a coffee/gelato shop + a mini supermarket.
Its tucked inside a gated building so its very safe, and its on the top floor (there is an elevator), so the view of the city is incredible during the day and at night.
Leonardo helped us with earlier check-in as we arrived earlier than planned to Florence, and even checked on us during the stay too.
Will definitely return during future travels to Florence.