Tegallalang rice-terrace walk.
The classic Mawenu hike. Out by van at six-thirty to the high end of the Tegallalang valley, then four hours of mostly-downhill walking through the rice terraces, with stops at three farmer warungs for coffee and a sweet rice cake. Ends at the river temple at the bottom of the valley.
Pak Made grew up in this valley and knows every farmer on the way. He'll introduce you to four or five and translate. Bring sturdy shoes and a light layer; the morning is cool but the valley warms by ten.