Ok so far i have
Infirmary - If you become poisoned you can go to the infirmary to cure yourself.
Computer Room - In this room you can access the security cameras on that floor. Although you need a keycard to use it.
Security Room - In this room you can turn on the security turrets. Be careful though, once they're on the only way to turn them off is quite far away, and they attack you too.
The Destroyed Room - This room is covered in rubble from the meteor. There isn't much to do in this room but it's a good place to hide or set a trap for somebody.
Crew Member Rooms - In these rooms you'll be able to speak to a crew member and in some rooms enter their closet or bathrooms. Also, a good hiding spot.
Captains Quaters - This room is quite hard to find, considering you need a keycard before you can enter it. In this room you'll find the captain and maybe a special item or something along the lines of that.
Lab 1 - You can access the data on the experiments going on in the space station.
Prisoners Room - Luckily, there hasn't been much crime on the space station
so the cells are empty. Unlickily, any player who enters a jail cell can be locked in by one of his "fellow" players.
Main Lab - This is where all the expirements are currently going on. All other information on this room is unknown.
That's all i have so far, it's not a lot. Theres about 4 empty rooms as of now.