Stairs
he's on the bottom floor but you need to take the elevator on the 1st or 2nd floor ( you have to have the lift key) and take it to the bottom floor
Floor 11.
7th floor.
i think it's at the basement floor on a table.
in a pokeball on the top floor of celadon mansion.
trade it to leafgreen from XD(Or firered).Put it in the slot 2 slot to get it to diamond and pearl. in mystery dungeon, he's at the bottom of a 99 floor trench.
The old lady in the apartment in Celadon. 1st floor.
save mr.fuji from Pokemon tower top floor and get the poke flute
go to Pokemon tower on the 6th floor use the itemfinder
On the 5th floor of silph co.
11th floor but you gotta get to him by a teleporter pad on i think the 9th floor
IN SILTH CO: at top floor IN GAMBLING BASEMENT: at bottem floor IN VIRIDIAN GYM: at end of hallway