The hotel is a must have for a perfect vacation. We stayed in both Aspaki and Oia Castle, each for a couple of days. Both the suites have private balcony and jacuzzi, where you could enjoy all the astonishing view of sunset, caldera, and blue domes (or windmills) of Oia town. The most important thing is you could have all the best views of Santorini in a peaceful and private way, which is priceless on the island. (you don't need to get squeezed on the street and queue for long to get the best views) The staff are professional, very friendly, and very supportive. They helped me schedule transfers and some tours which I enjoyed. They are also very responsive whenever I want some help. Meeting the staff is a great part of our experience in Santorini. The room and facilities were also great, 5-star level. I love the local aesthetic room design, which brings consistent feeling of the Santorini. The room definitely worth the pricetag, but it won't be the essense of your vacation, comapred with the private view and the staff.