What, like Cornwall Troon or currently getting blown to kingdom come South Ayrshire? Troon isn’t bad if you want connections I suppose, South Beach might have something for that budget but otherwise you’re heading into Barassie which has all the charm of the 60’s scheme it is. A nice scheme, don’t get me wrong, but a scheme nonetheless.
If you have no sense of smell or don’t mind the reek of ammonia Largs isn’t a bad call either or Seamill if you’re a wannabe football player.
If I was gonna retire on that sort of cash and didn’t mind being miles from anywhere then Dumfries and Galloway would be my first choice. Property down there is ridiculously cheap by virtue of its remoteness, something down Port William way (near Wigtown) with an easy 1000m^2 garden can be had for £150k with plenty of cash left over to do what you will to the property. Good views out into the Costa del Solway and IOM on a good day, near Kirrochtree and a reasonable distance from a few other stanes, what’s not to like?