The Marble Sun is in a great location for views of the Caldera and for exploring Oia. Main thing is you need to be prepared for some steps, but even the walk down to the Marble Sun is breathtaking with several spots for different photos.
The house has everything you need for a nice stay. Kitchen was fully equipped and a wonderful touch was a welcome bottle of good Santorini wine. (It was better than the house wine at the restaurant.).
Beds were very comfortable... by far the best during my stay in Greece (3 islands).
Fanis & Tina were quick to respond to anything we needed, and the porter service for the luggage worked perfectly.
Great place!