Meh. The world and the atmosphere are great (Hogwarts castle is incredibly detailed) and the game was fun for about 15-20 hours. Then it just becomes really repetitive. The story is boring and NONE of the characters are interesting.
The combat is fun while you are still unlocking new spells but there are only a few that are actually good - after you unlock those it gets pretty boring.
The graphics are really nice tho and flying around the world is super fun as well.