It's a decent game with some flaws here and there, most notably being the extreme padding throughout the game. A lot of times you're made to do meaningless tasks that only serve to lengthen the game. I think Skyward Sword took me somewhere around 30 hours to beat on my first playthrough, by far the longest out of any Zelda game. Also Ghirahim the first couple of times were bad boss battles. I bet on average people struggled with this boss the first time and resorted to waggling their wiimotes everywhere. It didn't help the case at all that wii motion plus made a big difference. Only frustrations, like trying and failing to play that damn harp.
Things to like were the story, the atmosphere, the interconnectedness of the world, some cool dungeon designs like that ship dungeon. Music was excellent as always.