I wrote this same review in the Cocoon listing since we were a group of 6 and had booked both places:
I'm not writing this review as a way to bash on Elvira or her caves but more to just make people aware of what to expect from this place so they don't make the same mistake I did. Upon reading the details of these caves and seeing how many positive reviews it got, I knew they were definitely going to be small and cozy and I had no problem with this. What I didn't realize which was entirely my fault for not checking the amenities closely enough, is that there is no AC. Travelling to Greece during the summer months, the temperatures are typically upwards of 85 degrees every day. The caves, being how small they are and how little ventilation there is, get extremely hot in these high heats. For us, it made it very uncomfortable to come back to after a long day of touring the island in 90 degree weather. We were hoping that maybe it would be better over night considering there were fans in the caves and, while it was a little cooler, it was still very hot and stuffy. Unfortunately, after one night of this, we decided to find another place to stay for our remaining two nights in Santorini even though we knew we wouldn't get a refund.

I'm not saying that this airbnb was false advertising - I was aware of the small size and it doesn't list AC in the amenities and yes, that view was amazing but, honestly, it's hard to find somewhere in Santorini without a view so it might be worth it to spend a little extra money for the comfort of AC. Although I never met Elvira in person, she seemed like a very nice person and this review is not at all to be taken as a criticism to her since she did absolutely nothing wrong.

After reading the reviews, I was just a little disappointed and surprised that no one had more to say about the lack of AC and as a result I ended up wasting a lot of money booking this place so I hope this just makes people more aware of the actual attributes of the caves before they book.