Time stops when you pass through the doors of the Flatiron Room. Fifties-era Italian floral wallpaper, rolling library ladders. There’s live jazz or blues performed on a velvet-curtained stage makes this place intriguing and felt like you’ve walked back in time. What really draws a cocktail and spirits snob back is the whiskey. Old, rare, indie, you name it — if it’s distilled from fermented grain, it’s probably here. There are nearly 1,000 bottles to choose from, including Gordon & MacPhail, the Maltman, and 27-year-old limited-run Glenmorangie Pride (you should sip slowly — it’s a very pricey dram). A private..