If you're just looking for acheap place to stay, reconsider. If you're looking to meet people andto share some time and energy with them then delve into these clubs. Some clubs are free, others involve a cost. Some have host members andguest members, others just members. Mostly American then European members, with a fairly thin spread of members elsewhere.
Membership is free, though registration as a host is required to access the database as a guest.
But a password is required. Will be supplied with membership if requested. Perhaps the largest and most organised group. Conceived in Denmark in 1948 and growing steadily since. A healthy international membership.