The Yilan area is definitely getting to be one of my favorite places for a get away.
This trip I discovered a direct bus that in an hour drops you off in downtown hot spring town, Jiaoxi. Place your feet in the odorless free springs and enjoy chili ice cream from the Chili Hunters amazing array.
A walk to the local train and a few stops up north, you are on the black sand beach of Waiao. A surfing town with nothing to do but stare at the waves and enjoy the great company of the Rising Sun Inn or other little B&Bs on the small boardwalk.