Apeiron Blue Santorini is a five-star property in Fira, the main town of the Greek island of Santorini in the Cyclades. Fira sits high on the rim of the caldera, offering the island's signature view over the sea-filled volcanic crater and the white houses lining the cliffs. This luxury rating suits travellers wanting to experience Santorini's famed sunsets and dramatic volcanic scenery in style.