I really, really enjoyed staying at Chicag' Hostel. My Mom was visiting me in France while I was on a solo biking trip, and this was one of our stops— it was a highlight of our trip.
From walking in and hearing great old music, and seeing the staff baking cupcakes, to the wonderful kitchen with vintage dishes, and the bunk beds with old chairs made into a staircase, this hostel is one of my favorites. The reception area had an old piano, the coffee from the cafe was wonderful, and the two nights we were there the hostel had salsa dancing one night and a band playing the other. This place is definitely one of my favorite hostels— I'd love to come back and spend more time here.