This article is a travel topic
Hostels (more commonly referred to as "youth hostels") are a loosely-defined form of guest house, generally low-budget compared to other places to sleep. Although often used by youth and backpackers there is usually no upper age limit.
Hostelling International organization
Many national hostelling organizations have joined together to form Hostelling International  (formerly International Youth Hostel Federation), which maintains lists of youth hostels around the world and even takes bookings for some online. Affiliated hostels usually offer a certain minimum standard of lodging and a degree of accountability, although usually the largest risk (in terms of theft) is your fellow travellers, not the management.
Note that in some countries, many hostels are not affiliated with HI. Hostels are less common in North America than in Europe. Particularly in poorer countries, the IYHF network may be very limited and possibly even more expensive than alternative accommodations. Also beware of hidden charges: for example, in Scandinavian countries it is typical to charge extra if you do not provide your own bedding.
STAYWYSE: The Association for Youth Travel Accommodation
In October 2007, STAYWYSE was officially approved as a sector association of the World Youth, Student and Educational (WYSE) Travel Confederation , a not-for-profit organisation that represents the global community of youth travel, student travel, cultural exchange and international education specialists.
STAY WYSE is the only not-for-profit industry association to represent the entire global youth travel accommodation sector.
The Association's mission is to provide safe, affordable and clean accommodation within a communal atmosphere that encourages youth mobility and cultural understanding.
It's members include the leading Youth Travel Accommodation providers. It's current Board of Directors include members from Hostelling International, Hostelworld.com and Mundo Joven.
STAYWYSE undertakes an annual industry benchmark study. The study enables youth travel accommodation operators to benchmark their own business performance characteristics against global standards in order to develop strategic concepts and optimize business outcomes.
A sailboat hostel is a boat that has been redone for or dedicated to use as a hostel for international backpacker travelers. A sailboat hostel is a great way to see things that would otherwise be inaccessible or too expensive on a shoestring budget. A hostel of this sort should offer their beds at what could be considered a hosteling rate (roughly between $5 and $60 per day, depending on the country).
Sailboat hostels, depending on their size, can accommodate 3 or more people. Generally they would include a breakfast and some general sailing instruction and safety guidelines, as well as activities related to the sea such as snorkeling and surfing, to name only a couple.
While there are several stationary and motor-powered boat hostels, currently there are only a small handful of boats that could be considered sailboat hostels. This is a new kind of adventure, taking the spirit of international backpacker travel to the sea.