I quite frankly am appalled of the low rating of this film. I understand why someone might not enjoy it fully if not in the right mood, but this is a beautiful film, well thought through and excellently acted. Patrick Stewart shows why outside his roles as Picard or the poop emoji he is an excellent actor, but also the masterful melange (I swear not a Gurney Halleck pun) of piano music, intellectual romance, high art, fancy hotel life and beautiful Swiss scenery gives the film the feeling of an art work.
I could tell about the story: that it's about an old famous pianist, that is is about love, that it is about persevering in the face of terrible and senseless loss, but to me all of that was part of the piece, just another element that completes the art of the movie. I think the scene where Stewart's character explains the good part of getting old: your mind and your heart make peace with each other, describes the idea of the film best.
Bottom line: I really wish someone who knows how to play chess would consult in American movie chess scenes, but other than that, the film approached perfection for me. It doesn't lead anywhere, it is a feeling piece, something you need to experience and enjoy. I really hope you do.