You walk up to the door at the top of the stairs and you go through it. I haven't animated the doors yet. If that doesn't work I genuinely am sirprised because it works in every single build I've tested so far... as in, since the first build
it kept repeating 'Ive already been here' as i went up. I had to force it. Also going back to the table room meant i couldnt go back through the door... and there was no one in the bedroom, bathroom or pool area.