Puerto Plata is a town, so it doesn't have another town "in it" if you get me. There used to be a Finca Paraiso (farm) just outside of Puerto Plata, accessed off the main road to Montellano. Is this what you are thinking of?
If you are looking for information on the small town of Paraiso in Barahona, I have plenty of information and pictures... Was just there is February and will be returning in late June...