Perhaps Waterford - nice friendly airport with full facilities. Won't charge the earth. Airspace easy. Will sell you duty free for your return trip. Car hire etc available at the airport.
Waterford City is a very nice place, plenty of atmosphere, although now lacking the Crystal factory. Nearby to the airport is Tramore. Lovely beach, racecourse etc. Plenty to see in the surrounding area.
From Halfpenny Green route direct to STU then SLANY then direct EIWF
You could take a flight to nearby Kilkenny (900m Grass) - again the local members will give you a warm Irish welcome. Ancient city, lots to see, good shopping (for the ladies).
See
www.flyinginireland.com for further ideas, photo's of airfields etc.