This is a tough question because there are a few towns that I can't get over. I do know I'd rather live in Hoenn more than anything.
Fortree City is probably my favorite city, or at least tied with Lilycove as my favorite. Fortree has those really cool tree houses and the rope bridges that take forever to get across. I love the tree house idea and have always appreciated entering in the city. Lilycove, though, is by the sea and has a grumpy hotel guy watching TV, so there's definitely competition.
Fortree City is probably my favorite city, or at least tied with Lilycove as my favorite. Fortree has those really cool tree houses and the rope bridges that take forever to get across. I love the tree house idea and have always appreciated entering in the city. Lilycove, though, is by the sea and has a grumpy hotel guy watching TV, so there's definitely competition.