I bet her staff actually lives somewhere else... like, lower floors in regular rooms... if the whole floor is like a huge room, I can't imagine her sharing it with staff and dancers and all the people

Unless it's got inside corridors, halls and such, so that they don't bump on each other...
It sounds like they have a private jet indeed, but then again, it was said she missed her flight back to Tokyo from HongKong... if they had a private jet it wouldn't be a problem, right? Means she was coming back on some regular plane, a scheduled flight...