"joya" is "gem" and "amada" is "beloved" in spanish, based on Jamaica which is known to be super super pretty.
Joyamada is a visiting spot in Alluvien, and it is blessed by a lwa who lives there, who adores beautiful scenery, and curses any who damage it.
It also holds the most pirates. Pirates are granted free reign and a safe haven as long as they don't harm the island, and protect it from those who do.
It's city is named the same as its island, because the city itself was named before the island.
Irie was born here.