Interviewing celebrity real estate broker Adam Modlin is a bit like a Cold War-era rendezvous with a double agent. You pick a day and time, and move your assets — reporter and photographer — into the general area. Then you wait for a phone call to reveal the exact coordinates of your meeting. After several last-minute delays, an e-mail directs you to a dark hotel bar, and you find Modlin in a corner booth, sipping a designer sparkling water. “Sit down,” says Modlin, whose stylish threads would suit Daniel Craig’s 007 — matching gray vest, pants, and tie from the new Tom Ford collection, black loafers with a gold bit, Rolex watch, Chrome Hearts glasses.