If you are having trouble deciding where to stay, why not stay at three different places. Make your way from Playa Dorada to Sosua and then to Cabarete. I don't think it will cost you much more. See Puerto Plata hotels to book at
Dominican Republic directory of businesses, products and services
Check out more on the area in
Dominican Republic Travel Information
Puerto Plata, Playa Dorada, Sosua, Cabarete and Playa Grande links.
Also check out the magazine links in this section
Puerto Plata - Dominican Republic (DR1)
And the Vacation Planner section on Puerto Plata
Dominican Republic Vaction Planner