Both the apartment and Giacomo were perfect for our needs for a 2 night stay in Firenze.
Regarding the apartment, it's well furnished and equipped for all your needs, including kitchen and related utensils. Both the room and the toilet are spacious. The room is comfortable, including the bed and the mattress. The apartment is about 15 minutes walk from most sights in the city, about as close as you can get to the centre without being within the limited traffic zone.
Regarding the host, Giacomo, his local tips came in extremely handy (especially those about getting around using public transport and his favourite restaurants), and he was very helpful during check-in and checkout despite our slight delay.