Bryn Du Campsite - Breacon
Relatively new camp site, so all the facilities were as-new in a purpose built wooden building at the centre of the site. Super clean, low sinks for kids, plenty of washing up space. Tiny shop, hardstanding pitches. Only downside being that the entrance is on an A road, so getting from the camp site to anywhere else means walking or riding with shit doing 70. Awesome site though, even had a falcon turn up one morning (strapped to a dude of course, not just flapping his way in).