Wow!

Villa Kallisti is exactly what you want in a Santorini house-- beautiful views of the Caldera in a well equipped cave hose with a nice outdoor space. We cooked dinner and ate outside one night, which was great.

The apartment was every bit as beautiful as it looks in the photos. It's also a good value (take note-- the rate shown on Airbnb is for both the apartment and the smaller studio upstairs-- contact Maria directly for the rate for one or the other).

The only consideration should be whether or not you're comfortable with the steps needed to get to/from the house. This is a necessity for all cave houses in Oia, but we (a couple in our young 20s) were a little winded after the ~100 steps up to town, especially with luggage. Older travelers may want to decide whether they are okay with the steps.

Other recommendations-- there is no wifi in the apartment, so bring a few DVDs and a laptop from home if you want to have a night in with wine/movies.

I'll definitely contact Maria again when I travel back to Santorini, and highly recommend staying in one of her homes in Oia!