We didn't meet Maria in person and I understand she has several properties on Santorini. At all times prior to arrival and also on arrival in Oia, Maria was extremely fast to respond to all messages or queries. However, on arrival, we were met efficently and promptly by a porter who guided us to the property. This was critical as it is located half way down the cliff face amongst a maze of similar buildings and accessible only via narrow and steep paths. The reward is the view from the property over the Caldera which was absolutely wonderful and yet totally private.The apartment is exactly as per the photos:-unique cave like interior, basic but entirely adequate furniture and cooking faciities,but the bathroom is the only area in which the apartment was disappointing. Not just very small but also old and would suggest that some investment is required here. After 3 days stay it was getting annoying, especially the electric shower which is the oldest I have ever seen and kept tripping the fuse, causing a quick switch from warm to freezing shower. We loved the steep and winding walk to the promenade in Oia from the Cave BUT it is only partially lit at night and some parts are have extremely steep steps and gradient, thus probably not suitable for anyone who is not 100% physically fit. At this time of the season it seemed Oia was one big building site, and we had building work going on immediately above the Cave which involved drilling noise from early until late. However, we were out almost every day until late. We hired a car to tour the island and this I would strongly recommend as easily the most time and cost effective way to see all the sights of the island. There are some very exciting roads there, not for the fainthearted, though--for example, the road up to Ancient Thera or the road above Pyrgos to the Monasttery on top of the mountain.