i love johto, my favorite region, so probably olivine city
Pros:
i love the beach
it has boats every where, i love boating
it is a small city so there will always be places to go and things to do
because it is on the beach there will be water pokemon, it's my third favorite type
cons:
i don't want to deal with the SS. aqua hogging up the ports twice a week, but i'll deal