Barbara's place is really a perfect spot for near the heart of Florence. The duomo is only a 5-minute walk away, and the central market is just a walk around the corner. The central market is also a great location to be near, because it has many nearby restaurants, and it has a supply of anything you could want foodwise for cooking your own food during your stay. For what it's worth, there were also very nice amenities in the kitchen if that's the route you're interested in!
The apartment was very clean and the check-in process was very easy. Barbara sends pictures of every step of the process, and I was actually stunned by how detailed the instructions were. It made the process very smooth. There were pictures of the right door, how to retrieve the key, everything really!).
I had one minor issue during my fairly lengthy stay with the AC, and it was immediately addressed by Barbara. She ordered a new remote, and they came up with an immediate fix in the meantime so I wouldn't be without AC. I was extremely pleased with how caring and quick to respond she was.
Ultimately, it really was just a lovely, cosy place to stay. I've been to Florence several times now, and this was my favourite of the places I have been to, and it's the first one I will happily look forward to booking again in the future. I highly recommend Barbara's place!