Inside Tommy Bahama at 551 Fifth Avenue and catering to a mix of tourists and office workers, Marlin Bar has an upscale, pleasant feel to it.  The main bar area (past the spiral staircase leading upstairs to a restaurant) greets patrons and there’s a small lounge area in the back.  Happy hour specials offered from 4 to 6pm.  Small number of tap beers available (including our Brooklyn favorite, Kelso!)