Tried:
C:\Program Files\Ubisoft\Ubisoft Game Launcher\Savegames
OR
C:\Program Files (x86)\Ubisoft\Ubisoft Game Launcher\Savegames

C/Users/"your username"/Saved games/Assasins Creed 3

C:\Program Files\Ubisoft\Ubisoft Game Launcher\savegames

Anyone know?