Hate for OoT's Water Temple? But that's like a one of the best temples in the game. It's so challenging, fun and very atmospheric. And beating the temple is very satisfying.
If there was anything that was bad in OoT, it was probably the lack of fast transport during the kid Link part of the game. Kind of kills the the fun of exploration when you have to walk everywhere on a huge map... that and the trading quest for the big sword is pretty annoying, and so is catching all of the big poes just to get a stinking empty bottle.
Oh, wait. I just thought of a temple that did suck in OoT. The Shadow Temple. Such a boring dungeon.