Here's the guest list, and what floor everyone's staying on.
Rooms:
House MD: House/Wilson- 1st Fl.
Kingdom Hearts, Organization 13: Demyx/Axel/Roxas/Zexion, Vexen/Marluxia, Xigbar/Luxord, Saix/Xemnas, Xaldin, Lexeus, Larxene – 2nd Fl.
Gundam Wing: Wufei, Quatre/Trowa, Heero/Duo - 1st Fl.
Descendents of Darkness: Hisoka/Tsuzuki/Tatsumi/Watari – 3rd Fl.
Highlander: Joe, Richie/Adam, Amanda/Duncan - 1st & 2nd Fls.
Sailor Moon: Usagi/Mamaru, Michiru/Haruka, Minako/Ami/Rei, Hotaru/Setsuna/Makoto- 2nd Fl.
Beyblade: Kai/Rei – 3rd Fl.
Prince of Tennis: Rikkai: Genichirou/Seiichi, Masaharu/Hiroshi, Renji/Akaya, Jackal/Marui - 4th Fl.
Hyotei: Keigo/Jiroh, Mukahi/Yuushi, Chotarou/Ryu, Hiyoshi/Kabaji – 4th Fl.
Weiss Kreuz: Weiss: Aya/Yohji/Ken/Omi – 3rd Fl., Schwarz: Crawford, Schuldig/Farfarello, Nagi – Top Floor?
Fruits Basket: Ayame/Shigure/Hatori, Yuki/Kyo/Hatsuharu/Momiji, Kagura/Tohru – 1st Fl.