We spent five nights at the Cupola suites during mid August as part of our honeymoon. The reviews of the suites are very accurate. The suite was clean and well kept. The shower was fantastic, although there wasn't much counter space by the sink. If there were a shelving unit in the bathroom, it would have been helpful!
The location was great! It is slightly off the beaten path from the busy streets of Oia. Over the first few days, we grew to appreciate this as we noticed the other hotels over looking the water were not private at all. The short walk was also great to work off the wonderful dining in the area.
The best part about booking with Giannis was the hospitality and ease of having someone to rely on for direction, which isn't always the case when booking through Airbnb. From the moment we arrived he was readily available, and helped book our transportation from the airport, as well as a boat tour and rental car. He also reserved multiple restaurants for us. His top pick was Fino, which happened to be right around the corner from the suites and was an outstanding dinner, one of the best we had during our trip in Santorini.
We would highly recommend staying at the Cupola suites!