I reckon that the Brecon Beacons np is probably my first love. There's not much the beats Welsh…read morehills (I'm damn partial to Scottish, and Yorkshire hills too mind), it rains a lot in wales, so much a Welsh friend regularly comments on how those born and raised in daffodil country are brought into this world with inbuilt kagools, but, that is what makes them all so pretty and green!
The scenery, the walks, the hacks, hell- even sheep trekking now. The lambs, rolling farmland dotted with Heath and forest and wildflowers, waterfalls and brooks and trout pools.
The park is a dark sky reserve, so on a clear night you are in for a treat, and a good night's sleep without any light pollution.
They are plenty of different accommodation options to suit most tastes, camping, glamping, farmstays, b&bs, the works, and an abundance of pubs, cafes, old estates turned into gallery/farm shop combos, and restaurants full of beautiful local produce.