I don't know if it was here, but you don't need to get 7+ famous to access it. I erased saves earlier to start game from a beginning, and there is one bug that enlights meeting with a detective and then it gives you exclamation mark on bar location and you can't access it in that moment. Just don't go to detective as soon as you see the sign he sends you. You need to follow storyline, when news about Bike Leader start to show on TV. Then, storywise, you'll get access to bar without problems, and first part of Gloryhole is about Annabelle getting informations about his doings by listening to bikers in the toilet and then she will got her extra job
If it was explained earlier i'm sorry
flies away.