Donald Trump’s feud with Arianna Huffington runs so deep, it even extends to real estate. Trump, who slammed the liberal blog diva on Twitter this week as “unattractive,” tells us he made life hard for Huffington when she wanted to move into the Trump building at 502 Park Ave. last year. The Donald said, “She wanted the apartment right after she did the AOL deal. We didn’t make it easy for her, in fact, we raised rent to $100,000 a month especially for her. The price wasn’t in her favor, nor did I care, because I didn’t want her in the building. She balked at the price.” Trump says he takes issue with the Huffington Post’s coverage of him. He explained, “She is bad news. Only AOL being so stupid would have paid money to buy her site. AOL was even dumber than her husband. The trash they write about me is not reporting, there are so many inaccuracies about me on her site. I won’t hold back when I respond about her to my 1.4 million Twitter followers.” A rep for the Huffington Post declined to comment last night.