Our stay at Catriona's house was really nice. The room is spacious, and we appreciated the private bathroom. Catriona's house has a center location between Killarney national park, Dingle peninsula and the ring of Kerry. You will need a car though, big house means a little far from the city :) For eating you will have multiple choices in Milltown (in Castlemaine it is quite limited, especially on the evening).
The breakfast is really good too.
Catriona and her family are very kind and available for little talks if you like to share with your hosts.
Highly recomended!