Theres ghosts in the house?
Lol, I never noticed. I only went there to get a Rotom.
Do the ghosts only appear at night?
I saw the ghost in the daytime while i was getting Rotom. It was freaky cuz i saw both ghost and i was like OMG!!
If by Pokemon Mansion you mean the Pokemon Mansion on Cinnabar Island.. no. That's on Cinnabar :PIsn't the old Chateau supposed to be a freaky version of the Pokemon mansion? I read that somewhere on the internet and it does make sense..
Really? Huh. I went ghost-hunting during the daytime and never ran into either ghost. They only showed up when I tried again that night. Go figure...