We had a really nice stay at Mystagoge and on Santorini. Artemia's recommended driver had recently come down with COVID and she stepped in to make sure that we got to the various places we wanted to see. It was a nice opportunity to learn more about her and her family and to learn about Santorini. She was one of the best hosts I've met.
Mystagoge itself is just as described and shown in the pictures. A very cool and unusual space. I soaked and listened to music in the pool twice a day and we walked to the great coffee shop Omoo each morning. The neighborhood has a nice grocery store (Sklavenitis) and a few restaurants, but most of the time we were out exploring other parts of the island. We found Mystagoge well situated for getting pretty much anywhere on the Island (it's not that big). I'd definitely stay there again.