Evelyn's place is in a beautiful, quiet location away from the summer madness of Fira/Oia.
Expect shabby chic-style decor, and a renovated cave house. The building is cool (even without aircon) and the walls are very thick, so you shouldn't hear anything from the neighbouring houses (unlike a lot of places in Santorini). Only downside is as others have have mentioned the kitchen is a little basic, so there's a small hotplate, but no oven or microwave etc. Would stay again.