We had a great time at Cavana Cave house. House is awesome and really beautiful. Exactly as shown in pics. Awesome view from the terrace. Fully equipped kitchen and very close to bus stop. Though the bus service is not frequent. Oia is just 10 mins walk away. Eleni was very responsive and helped connect to a local tour operator. She was also flexible about check in and out, which really helped. The only thing which may happen is that village has occasional power and water cuts. In our 3 days stay, both went out for 1-2 hours but only once each.
One very important point to know is that from the road you have to walk down many steps to reach the house. So pl carry light luggage. Though Help was organised by Eleni to carry out luggage at nominal cost.
Overall a great experience and I would recommend this house to stay.