Beach is brill. Clean tidy and quiet. Even out of season it's beautiful.
We stay in a house on the beach road at Nefyn and the kids treat the beach like a back garden and dip in and out all week. Night life definitely not night clubs etc and we enjoyed pubs, restraunts and making our own entertainment. The Ty Coch is 40 mins walk along the coastal path, (Find it on the net) anf there's a good golf course a mile away. Locals are friendly and don't bite!