Good start, but then it gets ruined

It's not great by any means, but it's a pretty good movie that didn't leave me filled with regret for investing time in it.

The movie's neither hopeful in contrived ways, nor hopeless in different contrived ways. Somehow it manages to be wonderful

While it is a pity that the story wasn't told with more visual finesse, this is trivial compared to our real-world problems. It takes a good movie to put that into perspective.