Perfect place! We truly enjoyed our time in Florence at Marco's apartment. It was very easy to communicate with Marco prior to our arrival and he answered emails promptly. Bruno, his partner, met us at the apartment on our arrival. Bruno asked about our plans and what interested us. He then gave us suggestions based on our interests.
The apartment and bathroom (especially the bathroom!) are spacious by Italian standards. The kitchen is equipped with all the basics. We cooked dinner twice and had all the needed utensils. It was 90°F during our stay so we were thankful for air conditioning in the living room and bedroom. The apartment is in a perfect location - easy, short walk to train station and Duomo. And far enough away from the Duomo so that the neighborhood isn't overrun with hordes of tourists. The apartment was quiet at night, even with the windows open. The apartment is inside a larger building so it's off the street (hence, no street noise). We rarely heard our neighbors. The bedroom was roomy and the bed was comfortable. There are good restaurants nearby. We particularly liked Palle d'Oro for dinner and Gelateria dei Neri for gelato.
Highly recommend this apartment. We'd definitely stay here again.