[Pig]

Maybe Black Ash Dungeon?
The monsters give decent exp (about 0.1-0.2% soloing with a booster at 210) and it's right next to a repot.
The items they drop are useful for quests in the dungeon, too (grinding there will help get those somewhat rarer items you need a lot of such as incense sticks and iodine pills).

Maybe not.. but it's a thought.

EDIT:forgot to put what lvl i was soloing at.