If you have the opportunity to stay at Mary's place, take it! This is by far the most unique, beautiful, and luxurious experience I have ever had on a vacation. Everything from the complimentary breakfast to the pool to the gorgeous view from the home to the home itself was incredible and breathtaking. Even with impending lockdowns, Mary made us feel comfortable and provided tips on local eateries, and she was always extremely responsive, going out of her way to help us. For example, our shower malfunctioned and she promptly provided us access to a different home for a shower and fixed the issue immediately.
Again, if you have the chance, please stay at Mary's. It is a once-in-a-lifetime experience and a unique one at that--to echo other reviewers, you cannot get this close to the blue domes of Oia unless you are staying at one of the properties!