I am not a professional reviewer nor an amateur one. I am just an audience. The rating is high not because its ground breaking nor it is very creative on the director's part. To sum up in a sentence it is a melodrama of the uplifting kind.
The most important criteria is how it makes me feel after you have finish it. And it uplifted my spirits.
For me what is most important is for an audience not to feel cheated of an hour and a half to some popcorn fare that you will neither remember nor care the moment you finish it. That is cheating as the story is nether enjoyable nor affect me (could not relate to it emotionally at all).
A good story whatever the genre maybe if audience cannot relate to it then that movie has no payoff to be watched at all.