You can obviously stay at the Rifugio's although I'm not sure how many beds they have etc.
When we were there some Italians had hired out a 'room'. It had a huge bunk across the left hand side with about 4 bunk beds underneath it and some kind of a makeshift kitchen in the corner. It slept 18 hommes and I bet if f*cking stunk in the morning. That was just out of the car park on the left.
That sounds like just the thing we need. An 18 homme in a bed love train.