Visit the basement of the iconic B2 restaurant and you’ll find one of Harlem’s best kept secrets– Room 623. A reservation-only, sultry bar with live jazz music, Room 623 caters to old souls, jazz aficionados, and newcomers. The speakeasy began as a collaboration between restaurateur Adriane Ferguson and jazz artist Marcus Goldhaber, who aimed to create an “immersive, spontaneous, and inclusive” space with jazz in the spotlight. The result is a dimly lit, sultry room outfitted in plush chairs and exposed brick, with a menu of seafood small plates and craft cocktails. The spirit of jazz shines through in complex mixes like the “Smokin’ Sax,” (mezcal, campari, sweet vermouth) and “Simple Melody” (whiskey, muddled sugar, angostura bitter). A classy and understated ode to 1920s Harlem, it’s the perfect place for midnight conversations and getting lost in the music.