My wife and I stayed in Erika's apartment for 4 nights. We explored Florence for 2 days, and used the apartment as a base to drive through Tuscany for the other 2 days.
The apartment was spotless. It was extremely modern with self closing kitchen cabinets - appliances, fantastic cutlery and crockery. Erika had thought of everything- there was sugar, spices and even coffee pods for us to use and pop into her nespresso machine every morning.
The apartment is super well located - about a 7-10 min walk to the duomo which we thought was perfect because it was outside the really crowded tourist areas. Fantastic restaurants, bakeries and cafés on the same street- and even a parking garage for us to park our rental car.
Overall we were extremely impressed with the apartment and would strongly recommend it to anyone visiting Florence.