"Boisterous every weekday with young professionals", this "conveniently located" Penn Quarter bar "at the bottom of a high-rise" serves up an "awesome" happy hour with a "great variety" of "affordable martinis" in large, bi-level digs with faux pressed-tin ceilings, wooden booths and schoolhouse-style lighting; some snipe it's "dark" and can feel like a "college frat basement", but with "great...