I'd love to pick Cornwall but I know I'd be part of the problem of potentially pricing locals out. I'd probably pick somewhere in South Wales, relatively cheap, wife has family there and some beautiful areas in south west Wales.
North Wales or somewhere around the Lake District. I love the mountains and the sea. I'm planning to retire to the North (eventually, if I live long enough and it's a financial option).
Both are beautiful places! We stayed in North Wales in April for my wife's birthday as we climbed Snowdon and it was really beautiful. One of my favourite DJs performed a set on the railway they have and you get an amazing view of the area.
I'd probably live outside the lakes though purely because of how busy it gets in summer.
The caveat is that I'm from the US, and in basing the decision purely on loving the accent and having known a truly wonderful lady from there. So, you know, kinda sus.
Nah, great pick mate. River, sea, culture, piss up, friendly locals, great scran and a suitable distance from Manchester (far enough to keep them at arm's length but close enough that you can take advantage of the facilities).
Seeing as I live in the north east my options seem to be either north of Aberdeen or south of Birmingham. I'm going to say Bristol. I've never visited but it seems to have a nice reputation.
Welsh borders down Hereford way. You have all your big shopping requirements in Hereford, you have Hay-on-Wye for books and you are within striking distance of the Forest of Dean or the Brecon Beacons.