Very creepy. Very atmospheric. Effective lighting. Superb soundtrack.
Acting - I'm afraid you didn't really look the part - sorry.
Now the really picky stuff (so assume the film is 10/10 in my book but you're torturing me to find something wrong with it).
The shot at 1:40 was wrong - I can't quite put my finger on exactly how (or even if) you're crossing the line, but I felt we should see your profile from the other side.
Similarly at 1:52 there's a cut which doesn't work. Prior to that we see you approaching the door, then it is cut to what I presume is meant to be a POV, BUT the shot is from further away from the door and so your back should be in shot.
My only other nag was you giving yourself all those credits. A simple written & directed (or produced) by implies all the other stuff if no-one else is credited (except for acting which should have an additional credit). More than that and it looks like you're on an ego trip. At least they were reasonably understated.
BTW did you record any of the soundtrack yourself? Or what were your sources? I really thought that it made the film.