Veronica was incredible when I arrived; taking me on a tour of the room and amenities (which is set up more like a small hostel) before sitting down with a map and walking me through some suggested spots to see in Florence, even tailoring a possible tour given my time frame and interests. She helped prep the stovetop espresso maker for the next morning (I didn't know how to use it but wanted coffee on-the-ready the next morning!) I couldn't have asked for a better reception.
The location is ideal for walking to the train (under 10 minutes), postal amenities, a large market right outside, and Florence's many wonderful sights and attractions. The room was comfortable and as described.
My only complaint with my experience here is that my room overlooked the market so when the vendors started setting up in the small hours of the morning, it woke me up - repeatedly for several hours even though I needed to be up by 7 to get to the train the next morning. I don't know that either of the other guest rooms would be much better, noise-wise - one room was adjacent to the shared bathroom (creaky door, loud flusher) and the other was also close to the front of the building. So if you're a sound sleeper or can do earplugs, this is a great spot. If not, perhaps look to stay away from the market.