It actually is her drawing room in the WP, and yes they probably moved everything into a corner, so thats why it looks like a junk shop.
I still find it difficult to understand why, when there were storerooms full of the most gorgeous furniture, she chose this awful stuff.
I know that everyone has different tastes, but if one compares the Paley Palace in TS, and what the Yussoupovs put into their rooms, Empress Alexandra's taste is a mystery to me. I think her taste in general was based on Victorian rooms she occupied in her childhood and the horrors of Windsor Castle in QV time. A place she visited very often as a girl. These set the precedent for what she did to the AP and everywhere else. The " Maples" cozy look. Her brother also had an obsession with the " Style moderne", as is evidenced by the Palace in Hesse today, so I think he also had an influence on her as far as the Maple Room was concerned.
If one looks at the photographs of the rooms of Anna Vyrubova, they were very similar actually, I think mainly because she was so influenced by Alexandra, and tried to emulate everything she did. Perhaps thats why we were confused by this room, and that of A V.
Perhaps Alexandra helped Anna decorate her house in Tsarskoe. That would explain it.