Darth Wyyrlok's private office was located in the Temple of the Sith on Coruscant. In 137 ABY it was the site of Darth Wyyrlok's meetings with Grand Admiral Morlish Veed, in which the latter was offered to assume the title of Regent of the Empire, and a second one in which Konrad Rus was informed that the Imperial Mission would be altered so it would spread Sith ideology to the massess of the galaxy instead of continuing the Victory Without War program.
Lord Wyyrlok was also present on his office when Regent Veed confronted the Chagrian Sith Lord about his decision to exterminate all life on Dac.