Pension George is a lovely place to stay. Karterados is much less expensive than the prices you pay for food in Thera (also called Fira and Thira) and still is directly adjacent no more than a 15-20 min walk. There is a bus stop 5 mins away that will take you to all the major places down on the southern half and the bus to Oia for the sunset leaves from Thera. Helen is amazing and will go out of her way to make sure that you are cared for whether that means giving you beach towels, recommendations, or organizing your safe arrival and departure. Couldn't have had such a great time without her!