Viva may disappoint those viewers expecting the usual movie formula that builds steadily to a finish of climax/crisis/closure/resolution etc. If you enjoy a more European style of story + ambiance, with less reliance on a last-minute closure piece, then you'll likely find great enjoyment in Viva. I rate it way above the 5.8 that it's currently averaging, and I've noticed that a good many movies of a similar genre lose out by voters confused and trying to "get to the point" of the movie (there isn't one). It's not sharp, incisive, nor ground-breaking, and the real gems are the great character roles, the meandering story, with moments of great visual splendor or visual poetry, if that makes sense. Very enjoyable film for this viewer.
