EmmyLee, there are more photos to this series called "The opening of the Alexander Palace to the public. 1928". One is amazing of the Catherine Palace. As it is 1928 and the children's floor was open, the simplicity of the bed and surround, plus the curtained divider - this room could be one of the maid's rooms opposite to the grand duchess suite on the second floor. I am still working on Yakovlev which description of 1927 may help more to identify.
Joanna