we made a nice round trip:
day 1: from Bristen along Maderanertal valley ans ascent to Cavadiras hut
day 2: ascent of Oberalpstocke and desnet/travers to Etzli hut
day 3: descent from Etzli hut to Bristen
This is a very recommendabele round trip.
weather wasn't so fine - we climbed the mountain but we did not see it the whole 3 days...