for me, not really. i have a good memory and can remember where all of the keys are when i need to. with that being said, it's actually one of my favorite dungeons in OoT. i really thought changing the water level was cool and i liked how it had one huge hub room for the whole dungeon. when i went in, i was expecting the hardest dungeon ever due to it's reputation, but what i got was one of my favorite dungeons in the game.