Don't count on any of the various shelter-huts that you may find in your alpine-maps !! Most of them might be good for a short break in nasty weather, BUT as a place to spend the night they will mostly be out of question :
1) the interior is made in a way that makes sleeping there almost impossible : narrow, rough and simple benches will make it impossible to spend the night there.
2)Most of these huts will also be used as toilets by sheep and cows and there is a terrible smell inside
3)You never know, how many hikers had the same idea to rest inside the hut you are heading to
I saw various such shelter-huts and only close to bachalpsee there were a few that had a door-system that would no animals enable to walk inside of them.
The hut on my main picture had a perfect view - see my other picture - BUT it was totally open at the other side and used as toilet not only by cows...
It is not always easy to understand, why you would not be allowed to leave the marked paths on top of Jungfraujoch. You may see great crevasses nearby and plenty of foot-prints of other tourists leading there as well...
I made my pics in a large distance !
Please keep in my mind, that any rescue-activities have to be payed by the incautious tourists, and most of the insurances will not pay anything, when you had left the ordinary mountain-paths !!
warning from travel organizer that we are not allowed across the red rope line as shown in picture, be carefull with snow slide