I'm glad that I'm not the only one who thought the Water Temple wasn't particularly difficult. I had begun to wonder if I had just forgotten how hard it was when I first played the game, but after playing OOT again on my N64(for the first time in nearly 10 years) it honestly wasn't that difficult, just annoying and kinda boring.
The only part the got me stuck was that I didn't notice that when you raised the water level, that block in the central column floats up to the current water level. But that's my fault for not noticing that(Zelda Rule #1: Always keep an eye out for anything that looks like it can be moved in any way shape or form).