Good adaptation, but could be better and longer
I read the original story before I watched this because one of the reviews basically said this was a bad adaptation. I thought it was a good adaptation in a lot of factors, but I do agree with that guy that the intent of mystery of the original story was missing here. If that was your intent in this movie, it wasn't enough for me to be unsure of my guess. If your intent was to simply creep us out, it wasn't long enough to kind of build up the spookiness.
I do realize that you didn't have much time to make this better or whatnot. I'm reviewing just on what I watched.