YHAYHA is an initialism or abbreviation for Youth Hostels Association, for example that of England, Wales, and Australia. These are part of the Hostelling International (HI). They have long provided low-cost overnight accommodation, originally in scenic parts of the country, and on the assumption that all guests would cook for themselves.
Latterly its facilities have become more varied and less spartan in terms of comfort and amenities. Canteen facilities became routine in the larger and new urban hostels. Despite the organisation's name, membership has always been open to people of all ages.