Evil Genius FAQ

Inner Sanctum
  This is the only place your avatar can go to recover his stats, and agents
  seem to want to beat on stuff in here if they find it.  Remember to set the 
  door on '3' (or '4' if you're going to use it much).  You'll need to place 
  an impressive desk and table to complete Objective 2.  You'll need at least 
  a 4x6 room to fit the minimum stuff for the objective, but 8x8 will let you 
  build a more impressive room for fun.

  Nothing in this room generates heat on it's own, but if you retreat here to
  hide, you'll want it safe.

  Impressive Desk  - You can sit down at it
  Conference Table - Used to entertain other villains
  Soothing Atrium  - Replenishes your stats faster
  Cabinet          - Looks impressive