Just back from 4 days here (stayed at the nearly perfect Killarney Lodge) and needed to do our laundry. There is a new (opened in July) self-service laundry in Killarney that is owned/run by a long established dry cleaner. The name is Town Centre Launderette. Park in the big lot next to the tourist office and ask directions to the Tesco that is just across the street. The laundry is inside a mall and there is little signage outside, so the easiest thing is to find the Tesco and just walk inside the mall. Specifically it is the Killarney Shopping Arcade on New Street. They are open 7 days a week. The people are very friendly and helpful. This is a real find!