This review may contain spoilers. I can handle the truth.
This film is a pure cinematic experience. The stills are beautiful (just like old photographs) and the format totally serves the isolated atmosphere the director wants to emit.
The film messes with your mind from the beginning to the end. Do not expect answers regarding certain incidents taking place, such as "Is this real?", "Is this taking place in the past, the present, or the future?"; besides, the director himself admitted that the film is open to various interpretations.