Hostels, like the queenstown hostels, for example, are generally a type of lodgings in the form of a room filled some bunk beds that can accommodate up some people. There are two types of hostel rooms, the first type of gender mix that combines male and female or a second type that cater specifically to women or men only. The other option, using community networks of a world traveller community, the members of which are willing to open his home to be a place to stay for free.
For the last alternative, you can choose to sleep with a sleeping bag at the airport of destination cities, although not all airports or stations allow guests to sleep in this way. If you are still not familiar with the backpacker style like staying in a hostel or the airport, you also can still stay in the hotel at a bargain price.