Not really a city but who gives a shit.
>Team Aqua hideout>be in a cool pirate gang>get up and work whenever I want>get noogies from my bro Archie>bully Team Magma nerds>hang out with Shelly>live close to Lilycove city which has a mall museum and a beach>groove out to jazzy hideout themeThat last point wouldn't probably matter in real life but I just love the Magma/Aqua hideout theme, both in ORAS in the originals
https://www.youtube.com/watch?v=xEDe6Cai_nk