Yeah, I watched it last night too.
I had read several reviews so I wasn't expecting a giallo...just a sort of "giallo style".
And I also described it as an art house film rather than something that fits into an easily identifiable category. It's a film that you have to literally watch to the very last frame before the credits appear.
As a Blu-ray, I have to say that this is a first class presentation. I own four other Olive BDs which are old Paramount titles. This is (I think) the first modern film on BD released by Olive and it's outstanding as an audio/video treat.
I'm not really sure what to make of it as a movie. This is one of those films that might need a few more viewings. It's certainly not a film for anybody who doesn't have some previous exposure to art house movies. If the last movie you watched was TRANSFORMERS, you might have to work up to AMER . I'm going to watch the rest of the short films on the disc (I watched one last night) and then I'll give the feature another viewing and hope and I form some solid impression.