We were told about this place by a bartender at a nearby place and would have walked past it if we hadn't asked a "loitering stranger" in the alley if he knew where The Valley Bar was... He simply opened the nondescript door for us.
It has a fun, mysterious, illicit vibe. I had an old fashion and it was good. Bartender was friendly and checked on us enough to make sure we didn't run dry.
Met a couple fellow patrons at the bar and had fun conversations.
A fun place for something out of the ordinary.