Castletown-Kinneigh is a small agricultural village 10km west of Dunmanway and 12km east of Bandon—small enough that you'd miss it if you weren't looking, big enough to have what you need. The thing to see here is the Kinneigh Round Tower, attached to the Church of Ireland church in the village centre. It stands about 17 metres tall, built sometime in the 10th century, and has six sides—hexagonal, not the circular shape most round towers wear. This makes it architecturally unusual. The other hexagonal round tower in Ireland is at Aghagower, County Mayo. That's the company it keeps.
West Cork farming country. There's a small shop, a pub, the church. For services—groceries, fuel, restaurants—Dunmanway is 10 minutes west, Bandon is 12 minutes east. Don't come looking for a tourist infrastructure. Come looking for a round tower with an odd shape, a quiet churchyard, and the working rhythm of a small farming village.
The reason to come back. The things every local will eventually tell you about, usually after the second pint.
From Dunmanway: 10 min west on local roads. From Bandon: 12 min east on the R586.
Limited local services. Drive or arrange a taxi.
Nearest station is Bandon. No rail service in the village itself.
Cork Airport is 45 min south. Shannon is 90 min north.