Our stay at Opuntia House by Thireon was fantastic. It is an authentic cave house in the heart of Oia. The house was very comfortable for our part of six. We had plenty of room and bathroom space. The view of the caldera was spectacular even though the sunset in summer is not directly in front of you. And the house is in the middle of everything! It is walking distance to everything in Oia. Christos was a great host. He answered my numerous questions patiently and promptly and he even translated for us. He and his team were gracious and welcoming. One note though about Oia. It is super crowded in the summer for the sunset with tour buses and cruise ship people. Plus the town is made up of thousands of steps which could be and issue for those with limited mobility. For our part we adjusted and had an incredible time there.