Thoughts on the ending
Spoilers
A lot of reviews are saying that this wasn't a ghost story but rather a love story. Jamie and Flora discuss this at the end. Obviously from Jamie's perspective this is true. But I'm not sure how anyone could have watched this and felt that they were watching a love story. For the first eight and a half episodes the relationship between Dani and Jamie was a minor subplot. The intrigue of the story had to do with the haunted things that were happening around the house and with the lady of the lake.
Dani let the lady of the lake enter her body so she could save Flora. She would have done this with or without having a relationship with Jamie. Really, the story wouldn't have played out much different if they didn't have a relationship. I think it's a bit of a stretch to call this a love story.