I visited Ireland recently and for a change we went to counties Carlow and Kilkenny, very nice as both are full of history and ruins. Easy access from Dublin (only one-hour drive to Kilkenny), Kilkenny castle is fantastic with lots of nice accommodation. I found a good restaurant especially if you're a beef eater. Enjoy...
www.butlercourt.com (guest house)
www.celticbedandbreakfast.com (B&B Carlow)
www.langtons.ie (restaurant Kilkenny)
When in Kilkenny, make sure to climb the steps of the round-tower at the old Augustinian Friary. Amazing views of the entire city.
Up the road by the river is an unprepossessing looking grocery store - but it secretly doubles as a pub. Just walk though the shop and into the tiny bar in the back. In the 60s and 70s these type of premises were commonplace. Now they are rare. The only other one I know that has survived is in Abbeyleix.