Hostels are a unique form of accommodation unlike hotels or motels. They are unique in that nearly all facilities are shared with other guests. Rooms are dormitory style and are usually furnished with bunkbeds. Other areas such as bathrooms and lounges are shared as well. This shared facilities arrangement keeps the cost per guest low. More importantly, this arrangement creates a warm and welcoming communal camaraderie between guests.

reference: www.hostels.com/faq.hostels.html