For what its worth I've been hating on it over in the Netflix thread this week. I can't recommend anyone waste 9 hours on it. But some seem to enjoy it so to each their own. I will say, if you are there for the horror, you will certainly be disappointed. If you like your horror stories overly explained and wrapped up in a neat little bow then you will love it.
It has a slow start, a slow middle, and a slow ending. Thats not always bad, but in this case I think it is. The acting is great though, I'll give it that.