I've stayed in Cristina's place 2 times, once in 2019 and once in 2020 for multiple months each time. This is a great place to stay if you're visiting Florence whether it be just for a weekend or for a few months like I did. The location is great, it's close to grocery stores and transit stops and just far enough from the center that it's a little less hectic, but the walk to the center is only about 15-20 minutes. It's also very easy to get to the apartment from the airport and the SMN train station, you can just take the tram since it's only a 5-10 minute walk from a tram station. Cristina and Leonardo are great hosts and are very accommodating and understanding. Any time I needed something they were quick to respond and help me out. Highly recommended!