Categorizing this movie as "horror" is, at best, a stretch. Sure, there's a few ghosts, but that doesn't make it scary. Part of this movie's problem is that it has been misrepresented. When people see "horror", and read "The Presence", they're expecting your typical scary ghost flick- and are inevitably disappointed.
The Presence is really more of a psychological drama. It focuses less on the fear and more on the mental strain that is put on the woman, and later her boyfriend, by The Man in Black.
If you're looking for a ghost movie that's driven more by the storyline then it is by "what's-gonna-jump-out-of-the-shadows-next", you'll probably enjoy this.