Puerto Plata Beach Resort
BushBaby can probably fill you in more on this one, but it is right on the Malecon in Puerto Plata, has a small beach and there is a little stand right beside the beach to get something to eat and cheap Presidentes! It is quite reasonable, maybe pm or email BushBaby to find out the current rates. I have stayed there for a couple of nights on a fam trip - but that was many years ago so I can't state what it is like now. They had a very nice pool and pool bar. You will be within close range to eat at any of the local establishments as well.
Marlie