It's a small haven in the beautiful and turist-packed town of Oia. The interior consist of a bedroom and a small kitchen. A nice bathroom is right outside the front door. Bring your own soap and shampoo for the shower.
There is a private outdoor seating for 2 just outside the front door but the view is kind of blocked. We spent our time instead at the upper terrace which is like a small platform surrounded by an amazing view. You are a bit exposed to all the other turist enjoying the same view from the street higher up but for us it wasn't a problem.
We didn't meet Maria but she sent a guy to help us find the place and gave us a tour of the house. We were changing our plans on when to arrive in Oia a couple of times and there was no problem to change the check in time.
We should warn people that the place is surrounded by a lot of steps. If you have trouble walking up and down narrow steps you should probably avoid the cave-apartements in Oia.
The place is perfect for a couple and very romantic, especially the view is truly amazing!