Well this is pretty much Ocarina of Time firing on all engines. Just set my foot in the Forest Temple, and so far the game is pretty much as good as or perhaps slightly better than the original. The gyroscope aiming helps a lot, and the graphics are not spectacular, but the game looks as you thought Ocarina of Time looked.
I think Navi has been dialed back a little, she's not popping in with advice as much as I remember her doing. She does have a few new pieces of advice, though. Also, there's a small animation wink to Twilight Princess, see if you can spot it.
Can't quite comment on the 3D, my right eye starts to hurt if I try to use it, so I just play in 2D mode. Looks nice with the antialias you get with that.