This is the perfect place if you are looking for a calm getaway in Santorini. Megalochori is a beautiful traditional village that will take you away from the intensity of towns such as Fira. The red caves are located at the center of the main square which is great, and buses will take you anywhere else on the island (although I recommend renting a scooter/ATV to get around easier).
Argy was a great host, was always open to answering our questions and made great suggestions - namely for restaurants that were always delicious and affordable. The room was beautiful and very clean, and a little private rooftop terrasse was at our disposal of to have drinks and such.
In short, I highly recommend this facility (especially for couples), you will not be disappointed !