CANTINA ROOFTOP New York City skyline views can be seen outside the glass walls of this bar, where guests can step out for a photo op, a cocktail or a smoke. Comfortable, colorful couches are designed for large groups, while intimate tables are also available. Housemade margaritas and sangrias complement a list of specialty cocktails that include the Pachanga (Ketel One vodka, rosemary-infused cranberry juice, Aperol, citrus, soda water). M-Sa 5-11 pm. 605 W. 48th St., btw 11th & 12th aves., 212.957.1700. FLATIRON HALL A large beer hall filled with wooden communal tables, chandeliers and a collection of antique irons provides a jolly atmosphere for sipping any of the 11 house-brewed craft beers. A largely contemporary American menu is sprinkled with German, English and Indian favorites, from giant pretzels with cheddar-ale dip to traditional fish ‘n’ chips to chicken tikka masala wontons. W-Sa noon-midnight, Su-Tu noon10:30 pm. 38 W. 26th St., btw Fifth & Sixth aves., 646.790.3200. SLATE This sleek bi- level billiards parlor features pool tables, a snooker lounge, ping-pong, flat-screen TVs and the signature Cue Ball cocktail (Stoli Vanil, Malibu rum, pineapple juice, lime). M-Th noon-1 am, F-Sa noon- 4 am, Su noon-midnight. 54 W. 21st St., btw Fifth & Sixth aves., 212.989.0096. SLOWLY SHIRLEY An elegant cocktail lounge featuring deep red banquettes and craft cocktails, such as the Temple St. Sour, made with gin, cognac, peach liqueur, rice wine vinegar, horseradish syrup, ginger and lemon. Tu-Sa 6 pm- 4 am. 121 W. 10th St., at, Greenwich Ave., 212.243.2827. SUGAR EAST A grandfathered-in smoking license allows this upscale lounge and bar to be one of only seven NYC venues to permit smoking cigarettes indoors. Small plates include lobster arepa, skewers of chorizo and pineapple, and boneless house-smoked wings in tamarind barbecue sauce. A short-but-serious wine list complements an extensive menu of house- designed cocktails labeled by flavor, such as “grapefruit” or “tobacco.” Asthmatics beware: Smoking is the theme at this venue. M-Su 7 pm-2 am. 1125 First Ave., at W. 61st St., 212.832.4610. SUITE 36 This restaurant, sports bar and nightlife hotspot hybrid offers a diverse menu (baked crab and artichoke dip, Hawaiian pulled pork) in a refined setting (wood paneling, tufted leather booths). M-Th 4 pm-midnight, F 4 pm- 4 am, Sa 10 pm- 4 am. 16 W. 36th St., btw Fifth & Sixth aves., 212.695.0036.