We enjoyed our stay in the Art Cave! The patio is beautiful and has a great view of the mountain. The space was perfect for the 5 of us. The smaller villa has AC and the larger had a fan which kept us cool during the hot August weather. We enjoyed being away from the busyness of Fira or Oia and felt we had a more peaceful and private experience. The restaurant MetaxyMas is a two minute walk away. We went there a few times, it was that good.
It was recommended by our host we rent a car versus ATVs. My group opted not to do that (no one felt like driving). We were able to hail a taxi service on a daily basis but it is rather expensive. Most taxi services charge by the number of people in the vehicle, not by destination distance. That being said, it was nice to not worry about driving or parking but it's not the most convenient method of travel. You definitely need a car to go to the market or travel around the island.
Our host helped us with the taxi and we appreciated his service. I would gladly rent this villa again but next time, we'll opt for the car rental per his recommendation.