Megalochori is a really cool town outside of crowded Fira and Ia. We really enjoyed how charming it was. There are GREAT restaurants 2min from the Airbnb. I recommend Raki and Olio - try the local cuisine.
The Airbnb was as advertised - basically like staying in a cave. Very unique and comfortable.
If you plan on renting a car in Santorini (which I recommend) then Chris will help you rent a car for $50/day. I would suggest shopping around to see what other deals are available. Our car was a small two seater smart car that did not handle the hills well - but I guess that’s just life in Santorini!
If you book this Airbnb, I’m sure you will enjoy yourself.