Julien's place is very well situated. All main attractions, such as the duomo (20mins) are within walking distance. There is also a bus stop right around the corner, that gets you straight there from Santa Maria Novella. Communication was perfect, Julien sent us a detailed description of how to get to the apartment days before our arrival.
The building is well maintained. Our room was beautifully decorated and the beds were very comfortable. Julien was very friendly and helpful, giving us tips and information about the area. Our bedroom overlooked the road and even had a small balcony. There is a coffee station in the hallway where you can purchase cold or hot drinks and even snacks for a small fee. Both the bedroom and bathroom were very clean. Wifi is very fast with no interruptions. We were sadly only in Firenze for one night, but were allowed to leave our Suitcases in the airbnb after check-our for the whole day. My mother, sister and I are very happy and will definitely book there again next time we're in town. :)