Hi,
We stayed in a place in Ireland called Castletownshend(its about an hours drive from Cork) The village is real old world style but it has two very good Restaurants, 3 Pubs, Village tennis Courts, Playground etc.
Theres loads for Kids to do as you can take Sailing leasons at the village Pier. Whale watching trips are also avalable
There are numerious small beaches all within a 10 minute walk and lovely walks through the Woods and the coast line.
We rented a house for two weeks and although a little expensive, it was the highest quality rented acomodation we have ever rented.
House was called Ashgrove see
http://www.westcorkhouse.com for more details.
Castletownshend is an ideal base to explore the rest of West Cork from.
It is only an hours drive to Cork Airport, and the rest of west cork is at most a further 50 minutes from here