"A splinter of land detached from Santorini by a volcanic eruption in 1613 BC, Thirassia has somehow escaped everyone’s attention. Very few visitors bother to visit this breakaway island. Even fewer get to stay at Perivolas Hideaway, a magnificent villa resurrected from the ruins of a pumice mine. Invisible from afar, the red-and-black stone house appears like a floating mirage as you approach by speedboat. (The only other way to reach it is by helicopter.) The sea is framed in every arched window, and the barely there but ever-ready staff are a dream, but it’s the roof terrace that steals the show. At dusk, Santorini turns blue-black across the caldera, villages sparkling like fairy lights strung along the clifftops. —Rachel Howard" - Lauren Burvill