Wow I was able to understand your joke about splitting the room in half (at least I think I did) and I'm just at the first week.

I don't think so.

Good for you!

Only literally the floor – storey/floor/level is „piętro”, excluding ground floor, which is „parter” and floors below ground are „poziomy”(singular: „poziom”).

Side note: „parter” affects numbering of floors in Polish – „pierwsze piętro” is second floor(assuming that ground floor is floor 1 for you, if you use the British numbering, it's the same).

EDIT: Ignore everything I said. Emwue is right.