The white caves are a great experience. They are tucked away from the hustle and bustle with beautiful views. Not sunset views however, as that requires shifting to the other side of the OIA. The hosts were very responsive, arranged my pickup, drop off, and luggage carry (up and down the many steps) which was a huge help. Transportation is not cheap in Santorini and I think I would likely stay more central to downtown Fira on my next visit, as I am a single early 30's extrovert.
My overall experience with the Caves and the hosts was very professional and overall an enjoyable experience.
Thanks again!