The Malcolm Pryce Aberystwyth books are a good read, based around an old time private detective Sam Spade type working out of 22/1b stryd y popty ( Baker Street) based around Aber, so if you’ve been there you’ll know the places mentioned
Aber is run by druids, high security prison under the castle, prostitutes wear Welsh national dress, and wales once fought a war in Patagonia that ended up being their Vietnam.
I’m not selling it well here, the writing is good, it’s all a bit silly and they’re all on kindle