Hard Bargain - S1-E9
Visible crew/equipment: When Michael drives away at the end of the first scene, you can see a boom mic reflected on the car's surface.
Hard Bargain - S1-E9
Other mistake: When one of the kidnappers knocks on Michael's door, it shows him undoing a sliding barrel bolt before opening it, but the bolt does not have anything it slides into on the door frame rendering it pointless, especially as the door opens inwards. (00:30:20)
Hard Bargain - S1-E9
Continuity mistake: When the kidnapper holds Michael at gunpoint on the balcony, his hand holding the gun is shaking. In the next shot, from behind, his hand is perfectly still. The shot then switches back, and his hand is shaking again.
Chosen answer: It might not actually have one, in which case, he'd have to go down into the club and use theirs. As for showering, going to his mother's house or a gym membership would take care of that.
Captain Defenestrator