Perranporth is great! Stunning approach and really friendly! In my neck of the woods I really enjoy a trip to Shobdon, nice countryside and a great cafe.
On a tangent the worst GA experience I consistently have (unfortunately having to take students there) is Cardiff! I hate that place. Last time I went there I had to orbit north of Cardiff docks for 25 minutes while being told to standby by approach. The airfield was dead, and the traffic load on the RT was moderate.
What is your least favourite airfield for GA so we know where to avoid?