Villa Dio was beautiful! We loved the location in Firostefani that was close enough to walk to Fira, but far enough from the thick tourist crowds. The patio of course was amazing - spacious and the lounge chairs, umbrella and table & chairs outside were used by our group of 6 adults everyday. The view was lovely and we enjoyed many hours outside.
Yani was a great host, very helpful to our large group in arranging dinner reservations, car rentals and other recommendations. He was very quick to respond and took care of our group.
I would recommend this place to anyone looking for a beautiful place to stay. Just note that there are a lot of steps up and down (as many places have).