I liked the international hostel in Juneau.
And the hostel in Ketchikan is nice, it's in a church! It's clean and they have free breakfast (simple breakfast though) and coffee/tee/hot chocolate). Disadvantage is that you are waked up at 8 by a lady cleaning the dorm, and that you have to leave at 9 and return not before 6, which can sometimes be not so nice since it's almost always raining in Ketchikan. But overal I really liked the hostel :-)