Cerro Otto (1405m) is an 8km hike on a gravel road west from Bariloche. There’s enough traffic to make hitchhiking feasible, and it’s also a steep and tiring but rewarding bicycle route. The Teleférico Cerro Otto carries passengers to the summit, from where you get all-encompassing views of Lago Nahuel Huapi.
A 1.3km trail leads from the top of Cerro Otto to Club Andino’s Refugio Berghof (1240m), which hosts events and accepts overnight guests, though not always. The refugio also contains the Museo de Montaña Otto Meiling, named for a pioneering climber.