The view of the Caldera, as well as the troglodyte, was worth the price itself! The communication with Ef, Maria's right hand, was efficient and quite usefull. He gave us plenty of tips to appreciate Santorini like a local (as much as possible on such a touristic island ;) ). They organised our arrival and departure from the airport by taxi and the janitor even kept our luggage during all of the last day until quite late in the night as our departure flight was at 4AM. The flat was clean and there is a room service everyday. It's location in directly in the centre of Oia, Santorini's most popular place to hang out and take astonishing pictures, and nearby everything you need to enjoy the island!
The appartment itself, specially the kitchen, is quite basic, and it is not extremely soundproof as there was another terrasse beside our appartment and we could hear the other group, but it was not a problem since they were not disturbing.
Thanks again guys for the amazing service and the great and pretty traditionnal house!