CHeck Sosua by the Sea which is on a small beach along with an all inclusive which you wouldnt want. There are NO hotels on the Main beach. Just a question of closeness.
I like Villa Chessa which is walking distance to a small beach but out of town yet only 3 doors away from the Casino. Has a great pool, lovely grounds and comes with a great breakfast for 35 a night for a a/c 1 bedroom 2 bath apartment with a terrace.
Quiet, no noise except for the wildlife. The closest hotel to the main beach advertises on here. Something NEW in Sosua is the heading. Forget the name.
Good luck