Don't waste your time, this is another pretentious movie where there's no meaning and no substance. If you love horror movies, but hate being scared, give it a try.
If you love far off, grainy shots of childrens' feet, go for it. If watching a movie where the sound was recorded in an empty bathtub while the sink was running is your thing, cool. Reading five star reviews on stuff like this always has the inevitable "you have to be special to understand how great this is" take. Youre not special if you like this movie. You're lying.