I can't say enough good things about this place! It's very homey and wonderfully decorated (the pictures are accurate) and Gianluigi and his wife Luisa included a lot of thoughtful touches like, for example, having the towels and soap out on the bed tied up with a beautiful lace ribbon. And of course the breakfast that other reviewers have mentioned - I really appreciated not having to go try to find food and coffee first thing in the morning, especially when we were only there for 2 nights so it wouldn't have made sense to buy our own groceries. There are plenty of dishes, pots and pans, and an espresso maker in the kitchen, so you really feel right at home.
The timing didn't work out for us to meet Gianluigi, but Luisa met us when we got there (about 1.5 hours late due to train delays, but they were very understanding; communication was always prompt). She showed us how everything in the apartment worked, as well as a map with tips on how to find things in Florence. She also gave us some restaurant recommendations, and though we didn't end up trying those places, I still appreciated that. You could tell they really really want their guests to enjoy their home and the time in their city. Since they were right across the hall, we dropped off the keys at checkout with Luisa as well, and she was so pleased to hear how much we'd loved Florence.
The apartment is a wonderful value for the money - a good amount of space, with the bedroom, kitchen, and living room all separate; and a great location about 10 minutes' walking distance from the Duomo. Again, I highly recommend it. Thanks again to Gianluigi and Luisa!