Eevee Quest Location : Route 4

QUEST SOLVING METHOD IS SHOWN DOWN
BROTHERS LOCATION IN ORDER
Brother One: Grassy Patch

Brother Two: Route 3

Brother Three: Bluegum Pokemon Center

Brother Four: Route 3 Secret Grotto

Brother Five
Edit by PP:
This last brother is now in the Darlinghurst Eatery. It's this building here:

Talk to the waitress at the door and give her a Diner Coupon to enter. The sage would be in the back of the room.
THATS ALL FOLK!!! ENJOY YOUR NEW POKEMON.