I just reached the 5th temple, and I'm having a great time too. It's such a charming game, with personality in spades, and a lot of love clearly went into making it.
The seemingly never-ending stream of new echoes to play around with keeps things from ever getting stale, and it remains faithful to series staples without ever feeling limited by them.
Aside from the framerate fluctuations, I honestly have no real problems with it so far. It's definitely a departure from Link's adventures, but I appreciate that it tries something new and creative. It's not quite among the very best games in the franchise, but it's a worthy addition nonetheless.