Just got finished with good old Turtle Rock in ALBW.
I really liked how well both of the elemental rods were incorporated into it. Normally, a dungeon that forced usage of two completely different items usually irks me (or even two different mechanics, like constantly playing the Control Melody in WW, ugh), but I didn't have much of an issue at all with this one. Really nice to see that all of the dungeons have distinctive characteristics in this game, something that was a tad bit blurred in ALttP.
And the boss was awesome too, not going to spoil it.