Our stay at Maria's was lovely! Keep in mind that there are lots of steps to get to the place, so you must be in good enough shape to walk up and down a good amount! Close to everything in Oia, and the porters were very helpful with our bags.
The main photo of the house isn't accurate, however. It shows a daybed, which Maria has at her other properties right next door, but this property only has a small cushioned seat.
Otherwise, very enjoyable :)