A lovely, spacious, and comfortable apartment with everything you need in the heart of Florence. The apartment provide a fantastic base for us to explore and was well enough equipped that we even stayed in one night and made a simple dinner. The terrace with the view of the duomo is a great space for a glass of wine or a cup of coffee (though it was quite chilly when we were there, so we didn't use it as much as we would have liked).
It was also quiet, clean, well regulated temperature-wise, and well stocked.
As others have mentioned, there are a lot of stairs to climb to get to the apartment and some stairs inside as well to reach two of the bedrooms. I would not recommend this space for anyone with mobility issues or small children. Otherwise, I heartily recommend it!