Trwyn Yr Wylfa, Penmaenmawr, Conwy, N Wales CoastMapStayed there last weekend, lovely site on the side of a hill within walking distance of both the beach and the mountains. Two large fields, no booking, just turn up and choose a pitch, can't imagine it would ever be full but might be difficult to find a flat bit if it's busy. Basic but adequate facilities (hot showers, bog roll).
This is when we arrived and daughter found out why she'd been advised to check her tent was all in the bag
before setting off...
The site seen from the ridge to the East, our pitch is by the hedge & big tree near the bottom:
Fantastic views over the sea from the site (no pictures). Highly recommended.
The price displayed is £6/£3 but the owner charged us £5/£2