Sure I would. What's to be afraid of? You think ghosts want to hang out in old abandoned houses where no one goes? Of course not. The spirits of dead people like nice, warm, comfortable houses where the living are, houses just like the one you're in now. Was that a noise coming from your closet?
Do to the low amount of details on said bet i would most certainly do it. I would be able to bring a good amount of lights there (plus friends, but most likely not) and supplies (food, beverages, beds, etc) This would be possible since the rules never specify anything really, thus making this extremely easy to do.
Like this? Read American Ghost Jack Manhwa. Seriously, people spend fifteen nights in a mansion just like this one. It's psychological and horrific and altogether pure genius please go read it so I won't be alone in the fandom
No amount of money is worth trauma
But I'd force a friend to come along with me...
Double or nothing, I stay up all night.
It's money or death and I'm fine with either one
Wooooo