This can be either single beds or bunk beds. Backpackers are either old houses converted into backpackers or purpose built buildings. Each backpacker has a kitchen as backpackers tend to cook their meals to lower their cost. Some backpackers segregate their rooms by genders and some don't. Same goes for toilets and bathrooms.
Many backpackers also have single and double rooms but the price is more.
So at blenheim backpackers, by each stove was a food prep area with its own knives, forks, pots, bowls etc. There's more than one stove. There are ovens and microwaves. At the backpackers in Dunedin, the fridge was one of those multidoor ones you get at dairies or petrol stations. This was a four door fridge with glass doors and shelves.