Killavullen isn't a village so much as a hamlet that assembled itself around Longueville House. The house sits on a bend of the Blackwater between Mallow and Kanturk. The estate produces cider and apple brandy — serious cider, proper apple brandy, not wine.
The O'Callaghans have lived here for centuries—Catholic landowners who somehow held the land through the bad centuries when most didn't. Now they run the house as a hotel and farm the slopes. The cider and apple brandy are serious things. The vineyard is a serious thing. The river is a serious thing: salmon and trout fishing, the beats booked months ahead.
You don't stop in Killavullen for pubs or music. You stop because you're curious about an actual working vineyard on the south slope of an Irish river, and the hotel serves what it grows. Or you're a fisher, and the Blackwater is calling.
On the N72 between Mallow (8km south) and Kanturk (16km north). The house is signposted from the road.
Not a bus route. You need a car.