I love the originality of telling a haunted house movie from the perspective of the ghost. I'd been enamored by the idea since I first saw the trailer and am generally a fan of the director, Steven Soderberg.
If you're not swept up in the uniqueness of the camera that seems to float through the house and piecing together the dynamics of this family, it's gonna be a long movie for you. I could see how the pacing would be problematic for some of the audience. It takes its time establishing what's going on in this family of two teenagers and a husband and wife that are struggling.
Ultimately, I wasn't very satisfied by the antagonist of the story and I wish they had gone in another direction there. I could see myself watching it again, though.