Previous reviewer Claudio Carvalho gave a much better recap of the film's plot details than I could. What I recall mostly is that it was just so beautiful, in every sense - emotionally, visually, editorially - just gorgeous.
If you like movies that are wonderful to look at, and also have emotional content to which that beauty is relevant, I think you will be glad to have seen this extraordinary and unusual work of art.
On a scale of 1 to 10, I'd give it about an 8.75. The only reason I shy away from 9 is that it is a mood piece. If you are in the mood for a really artistic, very romantic film, then it's a 10. I definitely think it's a must-see, but none of us can be in that mood all the time, so, overall, 8.75.