Pokemon LeafGreen what is Selphy's house in Resort Gorgeous?

Note: you must have rescued lady selphy in the lost cave, and captured most of the Pokemon in the pokedex.

selphy's house is on island five, resort gorgeus before talking to lady selphy, save. she will ask you to show her a Pokemon. if this Pokemon is in your party or PC, fly quickly to the pokecenter and claim that Pokemon. use surf to go back to resort gorgeus and show her the Pokemon. if you take to long, she'll get bored and ask you to show her another Pokemon. if you show her the Pokemon before she gets bored, she'll ask Sebastian (a man will appear out of nowhere) to give you something in return.

these are what he'll give you luxury ball: common pearl/big pearl: rarely nugget: almost never

Actually you can also get stardust which is rare