Alexei Barrionuevo has another good Big Deal column in the Times on Sunday. It includes a shopping list of the best penthouses currently for sale around Manhattan. But celebrity broker Raphael De Niro should have read my new Unreal Estate column in Avenue before claiming that Martin Zweig (at right) is looking to sell his awesome Pierre Hotel triplex. “I love our apartment and I don’t want to leave,” Zweig told me flatly.