Chris
My Ireland experience started at Lahinch and then both Ballybunion courses. I too recommend the Cashen course at Ballybunion as it has too many thrilling shots to dismiss. Just leave your pencil in the bag and have fun.
Instead of staying in the south, we headed up north. You will get the full fix of GREAT Irish hospitality and great golf at Ballyliffin, Enniscrone, Donegal, Carne, Connamura, Rosapana and Portsalon among others. The country is beautiful up there. The people are even nicer.
Enjoy