Rick has it as a top ten tourist traps in all of Europe and in my mind for good reason. To each their own but we found it a place dedicated to milking tourist dollars with tacky leprechaun-y shops, over priced everything and a vibe that didn't come close to matching the rest of Ireland. Of course there are excellent restaurants, probably good hotels and B&B 's and its perfectly possible to really enjoy it I'm sure.....but it's far from the experience you can get in most of the rest of the area.
I'd stay in Kenmare, Castlemaine or Kilorglin to be near the wonders that are NEAR Killarney but avoid the rampant hucksterism of the city itself. You can experience great music, scenery, history, the people and the real magic of Ireland any number of other places.
Some may have enjoyed it and that's great.....but in this I'm 100% with Rick and urge skipping this and Blarney and instead experience the real Ireland old and new - which is filled with the wonder of this amazing country not an overrun city designed for grabbing every last tourist dollar. In large measure it is what one person described as "a stereotyped amusement park view of Ireland as close to the real Ireland as a box of Lucky Charms".