Hi Nilly,
I have forgotten my geography ::) though I was brought up in Ireland. We used to live in the north, Co.Monaghan.
Co. Kerry is very nice or at least is was. The Wicklow mountains are to die for and the scenery is stunning. Dingle bay is another pretty place that has stunning cliff walks. Parts of Northern Ireland are particularly beautiful too, I cant tell you too much more from experience as I was a mere whippersnapper when we lived over there.
Wherever you go you should be welcomed warmly, I have friends in Cork and thats a lovely county as well. You won't have to go far to find the scenic spots. But be warned the roads are atrocious, if you intend to hire a car. There is a motorway from Dublin to the south, but when it runs out.....it runs out!! Then you're down to pot holes and a rough ride :-\ 8) ;D ;D
Enjoy your stay and we want to see pics too on your return!! ;D ;D