A seemingly incongruous setting for the consummate cocktail, the Marlin's bar actually serves a splendid version of the original, with your choice of top-shelf gin and vermouth as well as the newfangled blends involving apple schnapps or whatever. For atmosphere, the curving bar is long enough to accommodate your whole posse and low-key enough for sitting alone; comfortable sofas and seats are scattered around the open room. Experimental films, world music, and reggae provide accompaniments to your olive-or-not, shaken-or-stirred, gin or vodka reason to be here. As is typical with Miami Beach bars, drinks are pricey and door people sometimes less than extroverted, but the martini in your hand and the dizzying stimuli make the Marlin Bar a keeper, an absolute must for year-round residents to get to know.