Pokémon X and Y Playthrough Discussion

Also Serebii said Smoke Ball is found in the Lost Hotel. I looked inside for one too and couldn't find it, though. I think it's either cleverly hidden behind a rock smash wall, or you have to get past that annoying dude who says you aren't cool enough to meet the Boss.

There's another entrance to the hotel; go south along that route till you find another collapsed building that has very tall grass in it -- it should be in that section of the hotel.