Great hotel at an incredible location. Only a few min walk from the center for Fira, but in a quiet enough area where you're not smothered by other tourists at all hours. It's divided into 2 sections - the jacuzzi rooms in the lower section have an unobstructed view of the caldera. The other "Caldera view" rooms in the "main" building also have caldera view, but you'll have a street with cars/people in front of you as well. That's alright, as you can take a 5 second walk to the other side of the street and view the same incredible sunset. We stayed in the main building without the jacuzzi, and absolutely enjoyed it.
The owner is very friendly and easy to reach, and was very responsive via WhatsApp when we had questions.