So, how's this project doing now?
Here's a picture of my tavern prototype I've built from cardboard, to get an impression of the size and the positions of the interior, stairs, doors etc.
Can you tell me how large your tavern is?
Mine is 13 x 15 inches (minus 1,5 inches for the 2nd floor gangway on each side).
I think I'll keep the size for the final version. Very large when you think in scale but "indoor" gaming just needs more space.