Hostels provide accommodation where guests can rent a bed, sometimes a bunk bed, in a dormitory and share a common bathroom, kitchen, and lounge. Rooms can be mixed or single-sex, although private rooms are increasingly common in all types of hostels. All hostels are generally cheaper for both the supplier and the occupant and many hostels employ their long-term residents as desk clerks in exchange for free accommodation.
For more information about hostel, you can refer to this page:http://en.wikipedia.org/wiki/Hostel
Hospitable and friendly staff are always important in order to keep the customers coming back.