Dominical, at the mouth of the Rio Baru and still called “Playa Baru” on the official map, is definitely a surfer’s spot. Cheap accommodations, fine surf, more nightlife than you’d expect in so small a settlement.
There is a small hotel, the Roca Verde, on the road just past the road into Dominical. It has a fine service, its own semi-private cove, and a large rancho where there is a disco dancing every Saturday night.
We have found most of the other “amenities” at Dominical more or less honky-tonk, over-priced even at the relatively cheap tariffs, and not attractive to the better class of vacationers.
Dominical Costa Rica photo by https://www.flickr.com/photos/msegarra-mso/1442971045 
Donimical Beach Pic by https://www.flickr.com/photos/darrontravels/2225225296/
But for the avid surfer, Dominical has considerable merit. The surf is generally better than at Jacó, despite the clipping the cost/benefit ratio is better than at Jacó, and the town, such as it is, is less overrun by souvenir-hunting tourists.