The Teifi Netpool Inn
I live in St Dogmael's, Pembrokeshire, about a mile from the town of Cardigan. If anyone is ever in this area I'd recommend my local, the Teifi Netpool (http://www.teifinetpoolinn.com/). It's a friendly local pub, good beer from local breweries, the food is also good and it's located on the banks of the river Teifi with lovely views down river.
There's been a resurgence in small, local breweries recently - 4 have opened in the last year - and I'd thoroughly recommend trying "Cwrw Teifi" from the Mantle brewery (http://www.mantlebrewery.com/) - it's usually on draught at the Teifi Netpool.