Believe the hype. A Ghost Story is a masterpiece.
And for what it's worth, I had noooo idea it was going to those places. I pictured something far simpler and less ambitious. But by the end, this is wonderfully bold. And it played me like a fiddle, as they say. There are jaw-dropping moments in this movie that would not translate at all if you tried to describe them to someone. Funny how that works.
SPOILERS
Absolutely loved every scene that dealt with the passage of time. Rooney Mara looks out the window, but it's two different days. We see multiple Rooneys pass through the door, one by one. And then that headphone scene really got to me. That's when it truly gets great — I was fully on board and delighted till the very end.
Ghostfleck attempts ghost suicide jumping off that building, and I think it's clear that he then loops back in time, perhaps to the first moment that geographical location was used as a home.
The last few seconds killed me. I couldn't think of a more perfect ending.
This eerily reminded me of Inland Empire, which is also a ghost story in which the ghost gets stuck on earth, confused about how much time has passed, and then travels back in time and encounters herself, which triggers an eventual resolution.