This place is amazing! It is a "cave house", meaning some guy a long time ago (in the 1600s, I think) carved out a huge space below a hill in order to store foodstuffs there, and one of his descendants turned it into a rustic apartment. And that descendant knows how to treat her guests! The apartment was stocked with everything we could have wanted, from breakfast foods, to soap, shampoo, and feminine hygiene products, to a complimentary bottle of drinking water (you can drink the water there, but it's sea water, which is not delicious and will dehydrate you), to so much more.
We communicated entirely with Aristotelis prior to arriving and after departing because the woman whose apartment this is doesn't speak much English, and I think Aristotelis handles the logistics. He is a grade A guy! He communicated quickly and clearly, was a total professional, and was all around enjoyable to interact with.
My only caveat to any potential emptors is that the dogs in the neighborhood do what dogs do best (one of the things, at least): they bark their little doggie bark boxes off. In fact, the one that lives directly in front of the apartment sounded (I swear) as though he had caused his vocal folds permanent injury from so much warning of the hoomans. He was all raspy with his yaps. Honestly, though, it didn't bother me or my niece. My sister, however, didn't sleep for two nights straight. Personally, I encourage anybody considering this rental not to let my doggo disclaimer keep them from booking a great place.
As an additional tip, if you plan to visit many places on the island, I recommend a rental car. The bus system is moderately good at getting you to the major attractions, but it isn't a joy to ride. The freedom of having our own car made our stay waaay better. And, while there are restaurants and supermarkets (and beautiful Greek scenery) all easily accessible by foot, one requires the assistance of an automobile to reach places like Oia, Fira, and the beaches to the south.
Synopsis: book now!