What is the best place for grinding before Elite Four in Pokémon Brilliant Diamond?

Question

I just finished the last gym. where can I grind some lvls?

Comments

route 201

why do we allow these questions? isn't the answer always where you can find the highest leveled Pokemon that you can defeat, which is almost always right before whatever you're grinding to fight? The only times that's not the answer that I can think of are if you're grinding for something postgame (which these questions are rarely ever about).

@staff would it be inappropriate to ask an all-encompassing question for situations like this?

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I think "best place to grind before Elite 4" does get asked enough to count as a common repeat question, but grinding for other boss battles might be a little bit more complicated.