Great location right next to the Accademia museum. My wife, son (12), and I spent the night at Daniela's right after being crammed into a small room on a cruise ship for a week and her place was a welcome relief. Communicating with her was great from the time we booked and through our stay (although we were disappointed we could not meet her due to the limited time we had in Florence).
We stayed at Daniela's place during the August 2017 Lucifer Heat Wave in Europe and the reliable AC in her apartment gave us respite and allowed us to sleep comfortably. It did take us a little while to get the hang of using the keys to the apartment and the room/bathroom, but things went much more smoothly once we got the hang of things.
I would recommend Daniela's place to anyone I know going to Florence.