I have been visiting Santorini for 20 years but CSky has taken my breath away. Yes there are plenty of beautiful hotels on the island but Panos who owns and runs the hotel has created a true gem in a perfect location being an equal distance between Oia and Fira meaning you stay in an exotic position but only 10-15 mins in a cab from the wonders of the island.
You can tell how much love and hard work Panos has put into Csky. It took him 16 years to get permission and build this hotel which has the most epic views of the sunset & caldera but also 360 degree views of the island and sea. I rose to watch the amazing sunrise and in the evening watched the sun go down all from my private terrace in my private jacuzzi which sat on top of my suite. The range of suites range from stunning to draw dropping panoramic windows and private pools!
The hotel was full but the sense of privacy mean that you felt that you were the only ones being cared for.
The food was exquisite and the chef will pretty much cook whatever you would like.
The only problem was that we had to leave :-(
Panos should really be commended for fulfilling his dream and letting us share it.......we look forward to spending time here in the coming years.

Ben Moss London

We ended up at this hotel because our hotel overbooked for my group of eight and our hotel moved us here for one night. I could not have been happier. This boutique hotel had only 8 villas (might be nine). The view as the other reviewers mentioned was worth three WOWs!! It was beyond mesmerizing. The infinity pool was the best I have ever seen. If you are from the states, it had a "bed and breakfast" feel. The upstairs view is unmatched. And they had a very low glass railing so you could enjoy the view even while laying down sun bathing. (this type of railing would never be allowed in the States so it was awesome to see). I sat up there watching the sun slowly wake up the ocean. What makes the view so amazing is that you could then turn around and see the ocean behind you. When I get home, I will try to upload photos.
Now, to the staff. My group felt like we we movie stars. There was someone in waiting outside after we checked in to be available to handle whatever we needed. The owner was personally there and stayed up as late as we wanted to stay up. We were a large and hungry group of eight. We ordered drinks and then decided to stay for dinner. To be fair, we were a large group and ordered late. It looked like a chef was called in carrying groceries. It was very fresh and delicious. I suspect if we had given notice that we we going to eat there prior to 8pm at night, they would have gotten everything, so I would suggest letting them know if you plan on having dinner and what you think you will order. Having said that, they did a great job of preparing a delicious, fresh meal. they set up tables for us by the pool/bar and played music for us. We sang and danced and enjoyed the view and hospitality.
We preordered breakfast which they set up outside one of our villas. The orange juice was freshly squeezed oranges and the scrambled eggs we absolutely delicious. I can not say enough nice things about the people and staff. However, if you need to feel like you are in a hotel, don't stay here. If you want privacy and talking to the owner and having people who genuinely care that you are taken care of, stay here. I can't comment on the price because our hotel moved us here, but I would come back just for this place to stare at the view.
Oh, I almost forgot...we decided at 10pm at night, that we wanted to do a catamaran boat excursion. The owner managed to call someone at home and get us signed up for the morning tour, (also a must do ).

We were a group of 8, our hotel was overbooked and put us in Csky for a night. We were very lucky. Small, very intimate hotel whose owner ensured we were satisfied. It was evident they didn't get much warning our group was coming but bent over backwards to accommodate us. We were so enthralled with the extraordinary (and intimate) view this little gem of a hotel offered, AND the effort the staff made to accommodate us, we decided to have dinner there to give them our business. This decision initiated a mad scramble behind the scenes, giving us the impression they usually have more warning for a group our size. The food was very good and mostly what we ordered (there was some error in translation but we thoroughly enjoyed everything they brought us). This little hotel is roomy and geared for a honeymoon/wedding party. Very pleased the other hotel sent us here and we were disappointed when we had to leave for the original hotel (which was nice, but not Csky)