I've found some errors. A9, hollow tavern isnt marked. I think was located in A8 between a15b and a11.
Next, A16 stairs, description says that connect all three floors but in lower floor dont appear any stair.
Another one. The two stairs at a11, have 2 doors. But i dont understand how can be possible. A10 is above, under or at ground level?
Did you ever get a resolution to this? Just about to run it, and I found the same thing!