You picked the right spot if you are coming to PCB. As for places to stay, The Boardwalk is definitley the best. Staying on the beach is good but you want to make sure you stay down near the super clubs (La Vela and Spinnaker) This is where all the action will be and you will be able to avoid traffic by walking. AS for age ranges it is most 18 and up but be careful of the random 16 year old walking around, its just not worth it lol.

As for places to avoid, DO NOT stay at the Super 8. Its terrible and they are so strict. Other than that everything is pretty cool.