Take a heavy duty laundry bag because chances are they would need to carry laundry down stairs, corridors, across courtyards etc to get to the washer dryers. I broke many a bag until I got my act together. Typically a kitchen in halls would mean you get a shelf each in the fridge, and freezer, and cupboard. I recommend keeping dry stuffs like cereal in the bedroom, some uni flatmates are great and all cook meals together, and some just wanna do their own thing. I didn't experience it but friends did find some of their snacks went missing. Keep the expensive stuff in room (protein powders if applicable).