Herein are plans to a single-room 'performance' venue - the headline 'jazz club' is just one of the acts that could appear here. It would be just as good for stand-up comedians or other acts.
The premises are rather long and thin, and it's easy to imagine that this is some basement dive. In the main room there is a stage, an open space with tables and chairs and a bar with a few stools. Steps lead down from the entrance, and it meets standard requirements by having rest rooms. There isn't much room behind the bar, although there is a small office and a larger dressing room for performers beside the stage, with a back door if they need to beat a hasty retreat!
The plans come as a single sheet suitable for printing out and putting on the table in front of your players as a general view of the place they are visiting, and a massive single sheet version (18" x 24") for miniatures users who have access to a plotter. The text talks about a multiple-page version that can be produced on a normal printer and be stuck together, but none is provided.
PDF technology is used to good effect - you can toggle on and off the grid, furniture, text or the walls (not quite sure why you might want that unless you have a dramatically different shape of room in mind) - and overall it is an excellent dive in which you can perform or listen to some good music with a drink in hand, or plot an intrigue or two whilst nobody can overhear you.
Play it again, Sam!