I'm no expert at film critique, but, I'll give my simple "2 cents" without spoilers.
It's one of those "smart" films that requires you to fill in the gaps with either subtle hints or visual implication (i.e. - no blatant explanation via dialogue for the most part), so, if you're not quick to catch on , ya might not appreciate it as much, and may be left confused.
I personally enjoyed the gorgeous cinematography, and the aforementioned subtleties that leaves a lot open to interpretation and "theories", however , the climax of the film left me not feeling much. Perhaps the "subtleties" and the actors' performance didn't fully have me attached to the characters let alone their motives, and in result left me hardly feeling anything for them towards the ending of the film. I personally wouldn't consider it very "climatic". The conclusion was "okay" at best. Worth the watch for me? Indeed - but not riveting enough for another viewing. I'd recommend with caution to those expecting a horror or suspense-thriller film.