What a fabulous trip! Would highly recommend starting in Moscow.
We had a AX room on the 4th floor which was small but efficient. It was quiet with very little foot traffic on the outside walkway. Our cabin steward magically made everything perfect each day. On arrival we had a small problem with the window blinds not fully closing and mentioned it to the front desk staff on the way out the first touring day and it was repaired immediately.
The daily lectures given by the guides were informative and well attended. I had no problems viewing the screen.
Room with out a pole! Quiet - no noise transmission from adjoining cabins, little outside walking traffic. Close to Panorama Bar which has wonderful wifi connection. Small visual obstruction from stair hand rail when looking out window.