We stayed at Pori House for 4 nights.
Eleni and her colleagues met us by KEP, picked up our luggages and led us to descend quite a number of steps to reach Pori House.
Maria has many Airbnbs, it might be a good idea to ask her for how many stairs to reach her houses before booking.
People with knee problem may find it difficult to negotiate the many uneven steps which are everywhere in Santorini. She may be able to suggest one that has less steps. Pori House are located kind of mid level. There are alot other caves houses below us. I would not fancy staying in those.
Once we reached Pori House,we were "wow" by the million dollar view. It sits right below the famous 3 domes. There were 2 terraces where we could sit to enjoy the view , both day and night views are fabulous. We watched a number of people taking fancy profile picture wearing long flowing gown near our door step. It was quite entertaining actually.
The interior was very basic. Bathrooms had no place to hang towels nor to hold toilet paper. Th shower faucets holder not functioning properly, and was missing in one of the shower. However towels were changed and beds were made everyday.
Overall, I would rate Pori House 5 star for the view and Elani's team . A 3 star for comfort, particularly the bathrooms.