The Mirro Shaz shrine is fairly straightforward; you walk in, there is a ball tee'd up in the middle of the room, and a chest with a sledgehammer. Use Stasis on the ball, swing a few times with the hammer, bing bang boom, this golf game is over and the door opens when the ball lands in the hole on the other side of the wall.
Simple enough.
But where's the bonus treasure!?!? Every shrine has bonus treasure, and a simple iron sledgehammer required to solve the puzzle surely isn't it!
Best Answer
As you approach the altar to 'complete' the shrine, you'll notice that there's actually another path around the back to the left.
If you follow this path, you'll come to an elevator that leads down to a mirror of the first room. Same tee, another sledgehammer, and a door with a chest behind it.
But this time, the golf shot is far less forgiving. There are pillars obstructing all but the straightest of shots, and the hole doesn't have a large platform leading up to it to provide the relatively forgiving shot of the first tee. In order to land the shot at the exact distance, you'll need to hit it four times with the sledgehammer and then twice more with a one-handed weapon while under stasis. And it needs to be perfectly straight.
Good luck!