We reached Fairy Falls after a brisk twenty-five minute walk downhill (and stairs, that we dreaded going back up). We were not disappointed. Rivers and streams followed us down the stairs. The water is so clear that it makes you want to step right in. We didn't because it was cold, but man if it were summer.
We didn't go all the way down because we still had Piha to explore that day, but there was a huge drop and people were swimming down below the falls. But we did get to see them, and enjoyed our own little private waterfalls instead. :)