I watched this as well (without any prior knowledge of Cecil), was really getting into all the possibilities and entertaining the theories. But eventually I felt it dragged on too long and the ending was unsatisfying, was pretty disappointed with the reality. Oh well, killed 4h of my life.
I stopped watching it because it seemed to focus more about the hotel then the Alisa. I was interested the story of the hotel, I wanted to know what happened to the girl, so I just quickly googled it and then had no desire to watch the series anymore.