I haven't checked these Negril lodgings out in person, but culled user comments are consistently good. Check Hostelworld.com or review links below for user ratings.
Cheap digs in the Caribbean can be hard to find, but that white sand is so alluring, no matter the price. Judging from my experience, you may have the best luck finding inexpensive rooms in the off season which, unfortunately, is not during spring break (March and part of April) -- but give it a shot and you may get lucky.
1. Thrills Resort in Negril, Jamaica
Near the cliffs and Seven Mile Beach. Single, double and triple rooms; private baths.Triple: $15 (rates may vary)
Thrills Resort address: West End Road, P.O Box 99, Negril, Jamaica
2. Lighthouse 2 Inn in Negril, Jamaica
Rustic cabins (single, double, triple) and apartments; private baths.Triple: $25 (rates may vary; might be quoted $35 for a double)
Lighthouse 2 Inn address: West End opposite lighthouse, P.O Box 3108, Negril, Jamaica
3. LTU Villas in Negril, Jamaica
Ceiling fans and balconies; near the cliffs. Double rooms; private baths.Double: $25 (might be higher in season)
LTU Villas address: West End Road, P.O Box 2875, Negril, Jamaica
