Here is some info on the minor enfilade. Of course it originally was all designed by Rastrelli, but was partially redecorated in 1820 after a fire. Alexander I had a suite of rooms made for his mother, Maria Feodorovna, though she never used them. The suite consisted of a Reception Room, Karelian Drawing Room, Blue Drawing Room and a Bedchamber. I only have pictures of the Karelian or Red Drawing room and the Blue Drawing room. The whole suite was designed by Vasili Stasov. If anyone else has photos of the Reception Room or Bedchamber, I would love to see them. Does anyone know when they will be restored? I believe they are currently being used for exhibition halls? If anyone could let me know, I'd appreciate it.
The Karelian, or Red Drawing Room
The Blue Drawing Room. I have to admit I find this room particularly fine.
Here is some of Stasov's furniture for the Blue Drawing Room:
There is also the bedroom of Alexander I that was originally used by Catherine the Great and was designed by Rastrelli, but I'll save that for another post.
Incidentally, these photos came from the book 'Tsarskoye Selo: The Imperial Summer Residence' (which you can find in the Alexander Palace Book Finder) and 'Tsarskoe Selo: Furniture and Interiors' by Loukomskii.