Added 12 minutes later
Well, since nothing can be done here without a proper map (and only a topographer could create it, and Revan would have to post it), we can just look at the unopened corridors and doors.
So, our options for exploring the western part of the palace are now:
a) The northern "very dangerous" door;
b) Return to Anemone's corpse and go north from there;
c) Return almost to the beginning where there were two corridors and go north from there;
-) Two rooms (keys needed)
-) Staircase (blocked)