My favorite location for random battles, leveling up, and getting all the coins you could ever want. Equip the Experience booster to one of your characters if you have it.
You will get 27 experience points a battle, and 54 to the person equipped with the Experience Booster. Nice high yield fairly mid-game.
The Pure Water may be sold for 70 or 75 a piece. Then throw in the Exp. Booster (Experience Booster accessory) and you can get 27 exp for four units while the experience boosted person in or out of your party gains 54 per battle. This is a great leveling spot in the game.
While getting more coins than you know what to do with, you can buy Maple Syrup from the shopkeeper and essentially, never have to leave this area ever, until you want to save your game of course.
Equip Mallow with Work Pants, and Zoom Shoes to get the first move in battle (before both allies and enemies) taking out all enemies. If Mallow is of a lower level, it'll take two turns or so to take out all these enemies each time. Remember to time your Thunderbolt well to do extra damage. =)
Work Pants may only be bought at Moleville while you get Zoom Shoes from a chest in Boosters Tower. The EXP. Booster accessory can only be bought once from a frog upstair's in the Mayor's house (Seaside Town) for 22 frog coins.
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