The Refuge at Bonavau. It's about 1.5 hours above Champèry. We used it as the starting point for the Tour des Dents du Midi - a 3 day hike. The hut has 2 dormitories with clean mattresses and duvet on the floor. The owner and the staff (2 young ladies) are friendly, the food is decent (warm toast and home made jam made for a good breakfast). Great view of the Val d'Illiez and the Dents du Midi - specially the walk to Cabane de Susanfe. Only downside is the lack of shower.