Nicholas used his Working Study, it is said he didn't like the New Study and its true he hated Style Moderne - Jugendstil. You can see the hand of his brother-in-law the Grand Duke and Meltzer here. Nicholas went along with it. It was too big and modern for him. Imagine his size and how small he would have appeared in its vastness. However, his office was too small for large meetings and there was no where to put maps, charts, diagrams, etc - these were especially important during the war. The pool table was used frequently...
When the Music Room was demolished artificial marble from the walls and pilasters was installed in the corridor by order of the Tsar. There were many paings - I have a list. It was always dark. Guards were posted here at night. The elevator was there....
Let us hope all of this is recreated someday.
Bob