Okay, more in-depth thoughts on what I'd like to see in the venue department. Bear in mind I am not actually playing Eve and thus constitute a demographic you quite probably can ignore entirely, but that said...
Underground Metal Club
Demographic: Largely Minmatar spacers and sympathizers. Criminals/undesirables allowed, but keeping a low profile to avoid the club getting unwanted attention from authorities, etc. Discuss any shadier stuff privately of course, but no actual deals going down inside. Slavers and slaver sympathizers enter at their own risk.
Atmosphere/Surroundings: Think industrial. Gunmetal walls, emergency lighting, rough interior and plenty of secluded areas for groups of people to hang undisturbed. Furniture, lighting, decoration and is improvised, but very high quality and durability. Broken Amarr hullplates on the wall, the U'K fist incongruously sharing space with Angel decoration etc. No huge areas. Plenty of room to move, but no more than need be neither in ceiling height nor elsewhere.
Music: Heavy industrial metal, viking metal, metal in general. Fast paced and loud.
Location: Some Minnie station slightly off the beaten path. Club entrance itself is in the industrial area of the station, near the reactor cores etc.
Armaments/Violence: Arms allowed, but any violence or pissing off the people is rewarded by a severe trouncing and unceremonious dumping of your unconscious body somewhere in the bowels of the station. Whether you live or die as a result is a question of luck. Slavers are fair game.
No holopresence possible and other than public wired terminals, comms don't work down there.