Old Castle Oia – Adults Only by Mr and Mrs White offers a tranquil retreat perched above the iconic caldera of Oia, Greece. Set just steps from the Castle of Oia and a brief stroll from the Oia Blue Dome Church Viewpoint, this guest house places historic charm and stunning sea vistas at your doorstep. Guests enjoy complimentary Wi‑Fi throughout, a seasonal outdoor pool surrounded by comfortable outdoor furniture, and a private terrace perfect for sunrise coffee. A dedicated concierge service arranges bespoke tours, while a paid breakfast served in the garden adds a relaxed start to the day. The atmosphere is intimate and welcoming, with the hosts’ personal touch evident in every detail. Whether you’re exploring the nearby Panagia Platsani Church, wandering the Mnemossyne Gallery, or winding down at Ammoudi Bay, Old Castle Oia provides a serene base that blends authentic Cycladic character with thoughtful comforts.