I liked it a lot. A great meditation on loss, sadness, and being lost. The music was great and haunting, the colouring perfect for this movie, the framing was almost Lynchian in the way the camera dwelled, and even the aspect ratio added to the feeling of being stuck.
It was actually quite boring. Beatiful and well-made, though. It had a lot of nice ideas which weren't presented in a decent way, and I hated all the flashbacks/flashforwards. I would say that 80% of the film was wasted.
Also, it had the most stereotypical portrayal of a lesbian I have seen in recent years (and, SPOILER, she is the only character we see suffer a horrible death, reinforcing the Evil/Dead Lesbian Trope).
Oh, and I liked the soundtrack. It was nice that you didn't have to reach for the volume control every two minutes.