The Borg Bar is a hangout for the full body conversions of Night City and is the only bar of it's type known. The patrons are very specific on who they will let stay (but they won't actually throw someone out without reason) and there are only Borgs, their technicians and respected solo's who stay. There isn't actually a bouncer but there are usually volunteers for getting rid of people causing a disturbance.

The barman, a 'borg and owner of the bar, bought the place about six months ago and immediately approx 90% of the patrons were 'borgs and it's stayed that way ever since.
The drinks aren't very good and a couple taste like used machine oil (in fact one is!) but they aren't exactly meant for human consumption.

Anyone who walks in off the street and isn't a borg (yes they can tell) will usually be given the worst service, the worst drinks and usually the cold chrome shoulder. If they manage to last a month (none have yet) they might actually get some better service. Note: I said might, not will.
There are a few exceptions but the PC's are defintely not one of them.

And of course the place has the reputation of being the hangout for borgs and so the whole city knows it. But the cops don't come in and check the ID's and Registered Borgs (most of them are too afraid) and the gangs did, originally, try to muscle into the place. There are now fewer gangs in the area.
But it's the cyberpsycho's that make the general public afraid of the place (lets play word association: borg; cyberpsycho; crazy; killer; Aarrgh! Can you see my point?) but it isn't as much as a problem as you might think. There have been only 4 psycho's try to use the place as a hiding place.
The first two were blown away by two borgs who were guarding the door (the owner has contacts in C-SWAT) and the third was blown away as he opened the door (the contact was rather slow that time) while the fourth actually made it inside with a lot of cops on his tail. The cops didn't try to enter the bar and when they called for the psycho to surrender his battered body was thrown out the door, across the street, where it impacted with the wall of the building opposite - level with the third storey. This scared the cops even more and the only officer to enter the bar was a C-Swat Sargent. The Officer reappeared an hour later, very drunk, without any statement from those inside.

There hasn't yet been a fifth psycho.

Occasionally the borgs will play a party game they call 'Titanium Fist' where those present punch a SP80 of ex-ship plating with their fist. As you may be able to tell any 'fleshies' who try this will be in a lot of pain. Only one borg has managed to punch through the plating (he had CCPL) but many have tried. It is considered to be unsportsmanlike to use anything other than brass (or titanium) knuckles to protect the hand.

There is one anomaly which confuses many people and that is the table in the back corner of the place. No matter how crowded the place gets it is left empty or has two old guys sitting at it. If you try to sit there you will be ejected from the bar (like psycho number four) and if you get close enough to see the top it has rows of lines carved into the top.
The regular patrons see that the two old guys are not disturbed as they move small figurines on the table top and nobody will talk about what they are doing or who they are. Many wonder who the two old guys actually are but none of those present at the bar will tell.