Ugh...personally, while I loved Minish Cap (after all, it's a Zelda game), It was one of my least favorites in the series. The concept was really great, and the graphics were pretty good, but it didn't have enough dungeons. It still had a lot of gameplay, yes, but the game really would have been a lot better with more dungeons and fewer sidequests. Library books? Really? Getting a mushroom? Sure, a sidequest or two like that isn't bad (if its shorter and comes in a longer game), but when you have to do some mundane task every single time you finish a dungeon in order to continue, then there's a problem.
So it was decent, but I didn't really like it all that much.