There is no gym in Lilycove City.
If it helps here, here are where all the gyms are:
surf from lillycove city. it is quite far away, so get repels
no, it has the biggest contest hall and mall.
Lillycove City.
How to find the move deleter is in lillycove city (Or Slateport City.)
Go to the shopping tower in lillycove city
go to the safari zone in lillycove city.
lillycove city then go to mossdeep but beforeyou go to mossdeep deafeat team aqua
Hes in Lillycove city. top right corner. :)
You find Dodou in the Safari Zone, left of LillyCove City.
You have to win the master rank contest at lillycove city
Gym leaders are found in: Rustboro City Gym, Dewford Town Gym, Mauville City Gym, Lavaridge Town Gym, Petalburg City Gym, Fortree City Gym, Mossdeep City Gym, and Sootopolis City Gym
You only get one in the Team Aqua/Magma hideout just outside Lillycove City. You can get more by playing the lottery on the first floor of the Lillycove Department Store.