Really cool design, interesting scares, and some general weirdness which plays into it very well.
Biggest problem I had was I turned the lights off in the room, so I had some issues seeing the twist, but I got the idea.
Also of note is the way the glass broke it looks like the corpse came into the room through the window, since the shards were inside. Just a funny little catch that made me think he was some kinda angel or something.