Location: Super hidden. Seriously, follow the red light. 1898 Main Street, Vancouver, BC
I've never heard of this place before but here's my experience. First of all, there is basically no signage at night besides the red light. Open the door and you walk down the stairs to a graffiti filled hall that looks like you're going to Fight Club or perhaps a kill den. Open the door with no knob and surprise! You're in The Narrow Lounge. A bar that serves food that is unique and perhaps a romantic spot for a date. I suggest that you give ample warning first about the entrance ;)
I didn't get a chance to try their cocktail but I'll be sure to go back. But our server was very pleasant and the music was great. I'd go back for sure.