We stayed at Peter's Castle in the middle of September 2013 and it was great and unusual experience! Wonderful place in a quiet village. Only cows and meadows around. That's why it may be not easy to find the castle even with a satnav, look around over fences and you will see it.
For a few time in the evening we had archery lessons, pool game and stories about history and construction of the castle. The castle outside and inside is being rebuilt by Peter, he makes everything by himself. I also liked the garage - there is so much stuff in it, I think there is even a hang-glider.
So if you travel in Ireland your places to visit should include:
3. Dingle peninsula
2. Cliffs of Moher
1. Peter's Castle