romanov family, I am guessing that this is a view in the Alexander Palace, Pushkin, the principal home of the last Tsar Nicholas and his family. I know of other photos in which the draped beds are similar.
Uniform of the Kazansky Dragoons : Russian Grand Duchess Maria, daughter of Tsar Nicholas II, received her regiment in the year The uniform colors were dark green and blue with a red and white trim (tunic)
Grand Duchess Xenia Alexandrovna (sister to Tsar Nicholas) and her daughter Princess Irina Yusupov. Both survived the revolution. Irina was married to Felix Yusupov, one of the murderers of Grigorii Rasputin.