I saw this at the Phoenix Film Festival. I'd say this is tied for my favourite horror movie from that festival (with Eyes of my Mother...also amazing).
Ghost movies are really the only horror films that stand of chance of scaring me these days. There were a few times during this film that I was completely tense, and a few times, absolutely on the verge of terror as to what was going to happen next. The film was just so well done in terms of pacing.
Unfortunately, ghost movies also suffer from poor endings, quite frequently. This ending was better than most, but something about it didn't sit right with me, and that's all I'll say to prevent spoilers. You may disagree entirely. I'm a tough one on endings.
I really hope this gets a wide distribution, because if you're at all a fan of ghost movies, this movie is just fantastic. A definite must see!