We had family in Hanging from the top of the world House 1 and 2. Both are exactly as described and in the pictures. Beautiful views of the main part of the caldera and a few minutes walk to see the sunset at the old castle further west. The houses were very clean, had spices, utensils, detergent etc in the kitchen and comfortable. House 2 has 2 double bedrooms but both are lofts. We are young and able so it was fine but not suitable for children or older people. House 1 has a level, more open layout and shadier outdoor area. Both houses could get a bit hot- some portable fans would sort this out. And if mosquitos are attracted to you, you will need repellant as most places in Santorini are open air. Your own plug-in mosquito device for overnight could help. Some were supplied in the house but didn't seem to protect me!
Persa was not on the island when we stayed so she gave us directions and her contact phone. We found the house ok but you need to ask in at the local businesses for landmarks and it was a bit tricky as we arrived in the evening and Oia is quite dark and disorientating to start with. Also you need to be able to carry all your own bags up and down the stairs. Persa left the properties unlocked for us but we had some trouble with the door handle of House 1- it seemed locked at first but then we gave it a really firm twist and no problem. After that, we enjoyed our stay. If you are very independent travellers like us, then you will be fine and enjoy these lovely houses. But if you aren't used to traveling on your own, you should choose somewhere else with more immediate help available to you. There's no cleaning service, no tv, no internet, no phone. So if u have a problem, u need to figure out how to contact Persa by yourself. But she does respond immediately and sorted a problem with the hot water straight away. Basically, we had a great time here but you're on your own!