In summary this quiet studio apartment is a 5-10 minute walk from the Duomo, local restaurants etc. Irene was attentive without being in your face. We would recommend this to other couples wanting to stay in central Florence.
We self checked in, meaning that Irene did not physically meet us. She had left ample instructions about entering the property and it's facilities. There is a lot of walking to be had, to see the sights, so the hike up to the third floor to the door of this apartment should not phase you. An assertive walker, knowing the route, could get to the train station in 15 minutes, but allow longer if you have luggage. The main room and bathroom were clean and furnished with all you will need. There is a washing machine which was very handy. Although Irene left some cereal, there is a coffee shop a few doors down where breakfast coffee and croissants were cheap and tasty. I'm not sure what more we could want from this apartment for the price.
Irene was just a click away by email. She gave us good tips on where to eat and even kindly booked a restaurant for us. She also gave me some "local knowledge" on somewhere I wanted to go to visit. Irene was the right kind of attentive. She checked in with us before, during and at the end of our stay to see if we needed anything. She was not intrusive and we could not have wished for a better host. Due to a major life event she was not available to check us into the apartment. This was not a problem to us and although it would have been nice to meet our host, it would have been unnecessary.
If you book this apartment, enjoy, we did.