Good Leveling Up Area’s

[GriffinO1]

Are there good areas to level up Pokémon before the third gym? I need to level up my Pineco and Pichu, and a few others but I don’t know where to.

[Arys]

Grand Hall and grass in front of Corey's gym is pretty good. You might want to look for evolved pokemon to beat since they have a lot more exp. Grand Hall is good because you can have money too to buy Cotton Candy. 

[GriffinO1]

Thank you, but aren’t the Pokémon around grand hall rather low leveled?

[wcv]

24 minutes ago, GriffinO1 said:

Thank you, but aren’t the Pokémon around grand hall rather low leveled?

The trainers inside scale as you progress.

[Candy]

Honestly one of the most difficult times to get Pokemon up to level. I used the grass in Beryl Ward. Noctowls give good exp (but HP EV if you wanted to know)

[Q-Jei]

The grass around Beryl Cemetery is your best option for now. Then, to optimize your chances for defeating Shelly, I would recommend the cave under the Grand Staircase where you’ll find Aster & Eclipse for the second time. It’ll be even more interesting if you have special attackers in your team, because there’s nothing but Unown down there.

[doombotmecha]

Unown are mixed attacking EVs, aren't they? I don't see what benefit that specifically gives a special attacking Pokemon.

 

[Q-Jei]

Fighting Unown will increase your Sp.Atk EVs.

 

EDIT: According to Bulbapedia, both Sp.Atk & Attack will increase. But strangely, it only increased my Special Attack during one of my runs. I must not have paid attention to it.

Edited June 8, 2018 by Q-Jei

[seki108]

Just now, Q-Jei said:

Fighting Unown will increase your Sp.Atk EVs.

 

6 minutes ago, doombotmecha said:

Unown are mixed attacking EVs, aren't they?

They give both Attack and Sp. Attack.