Lenox Lounge is in Harlem, as you well know. Club's client list is mostly local black people in their 50s-60s, at least that's how it was when I used to go there. It is not really dangerous; if you leave your 10-gallon hat and "Texans for Bush" t-shirt in your hotel room you should be fine. Subway stop is right near, but Lenox Avenue is famous for breakdowns...