The ladder design you have could be improved upon. Either make it 2 wide, and as two stairs facing eachother in a U shape for each rung, or make there be a background to it 3 wide, with 2 column style backwalls on either side with the single inner piece having some type of wood with the rungs of the ladder as well. This is mainly for the one in the same room as the barkeep. A very good bonus to the first one, if you don't need the ladders to act as room barriers (which in your case you don't look like you need em that way) is to actuate them into the background. It lets you retain the look of a ladder, without it messing with pathing. For the second set of platform ladders you have to the right, turn them into _l stairs and actuate them into the background. Again, looks like an actual ladder, without screwing with pathing.