I hadn't heard of Mumbles, but I do have a story about Swansea that you may not have heard.
In the 1970s my son played football in the same team as a boy whose father had played for Sheffield Wednesday. His name is Brian.
Brian said that, at that time, SW's first match of the season was always a friendly against Swansea. Apart from the match, and the obvious fun they had going off together as a team, it was also a tough training weekend, and the coach worked them pretty hard.
One year, having timed their Saturday runs up the steep hill from the waterfront, the coach told them that if they could beat their best time, he'd buy them all lunch at the local Chinese Café. Brian said they gave it all they had and were ahead of time till they reached the top of the hill where they found a naked woman, sunbathing. And everybody stopped.
Of course, the coach knew she'd be there. She was one of the local working girls, and he'd hired her for the occasion.