Simple! Easy! The rules are simple – if you had a skyscraper floor, what would you put in it? Why would it be special? Etc! 1st person does Floor 1, next Floor 2, and so on!
Post your posts like this:
Floor #
This floor is home to bla bla bla. Why? Because yadda yadda yadda yadda yadda. Also, it has yabber yabber yabber yabber yabber. It also has yeah yeah yeah in it. Nah nah nah.
Floor 1
This floor looks like an ordinary hotel lobby by day. At night the laws of physics become rather malleable.
This room is the worst of all! It is filled with desks and a whiteboard and computers and people who think they know everything! Yes, this room is... SCHOOL!!!
This floor contains a black market for all kinds of illegal things. However, access to this place requires a rather lengthy process to obtain a card to prevent law enforcements from infiltrating this place. Not that it matters since it'll look like an empty floor to any officers who successfully infiltrates the place.
This floor has a moving statue. We're pretty sure it only moves whenever people aren't looking at it. Don't worry, it hasn't hurt anyone yet. But still, try not to make it angry.
This floor contains a Moai Statue who will answer any questions you throw at it. Don't expect it to be 100% accurate. And please don't use it for relationship advice. Many relationships have failed due to blindly trusting the statue.
This floor has everything you ever wanted. Hopes, dreams... kinda like the Mirror of Erised. People have wasted away here blindly gazing at their heart's deepest desire.