Have you been to Puerto Plata? It is like a big version of Sosua, and without all the street-walkers trying to pawn their services (I don’t need to tell you what type of services either, nudge, nudge, know what I mean?).
Have you considered staying long-term? Well then you’ll need to find a place to stay. There are a million real-estate agents that would love to “help” you find the right place for their price. So, how much does an apartment or house cost per month to rent? Well, why not go directly to the horse’s mouth and see what the various agents/owners are offering and for how much? In fact that is the way to go. This website also has quite a bit of land for sale, and businesses and buildings as well. This website below shows properties and prices from all the major real-estate agencies in Puerto Plata, and it has direct contact information listed for those agents: