Maria was a great host and was able to provide us with a shuttle for 30 euros from the port to the Cave as well as a list of recommendations for both Oia as well as how to spend our time in Santorini.
The Cave is by no means an upscale villa, but provides a humbling and unique experience with gorgeous and peaceful views. The bathroom is rather small, but the shower was warm and we did not spend too much time in the apartment.
Highly recommend staying in Oia for a few days during a visit to Santorini!