I'm not entirely sure why the shore fishing is so poorly-known in the DR - apart from the obvious statement that overfishing has made it not worthwhile. But a quick look on the maps of my chum Mr Google shows that your hotel is in quite an isolated location, which is a plus point, with some remote beaches to the west, so there should be some fish.
I stayed in Samana some years ago and had mixed results, but not great. There were a lot of lizardfish on those beaches, and they loved plastics - Sidewinder Sprats especially - sometimes jumping out of the water to hit the lure after I'd lifted it to recast. They're not terribly exciting, but they do provide two very tough fillets which make good bait. I caught some nice lane snapper, stingrays and shark at night using them.
There were also lots of small permit (around 1lb) in the surf zone on sandy beaches that took shrimp and fish baits and were great fun on LRF gear. So was the 7lb barracuda ....
Most of these guys have teeth, so don't use expensive FBM-type softs. Anything in silver/blue or green is fine. Also, some silvery metals such as Tobies or Dexters, as the jacks will go for them. On that side of the island there should be lots of bonefish, which will take shrimp, fish or squid baits.
It's worth mentioning that man-made bays cut out of the beach, like the ones just to the west of Dreams, will often attract shoals of baitfish sheltering from currents, and they, in turn, will be preyed on by jacks, cuda ... the usual suspects, so maybe a heavier rod. Tarpon love that sort of situation at night too. Take a head torch and shine it in the water: if you see glowing red eyes, they are usually tarpon (or underwater werewolves ... in which case - ruuuunnnn!!!!)