Arianna Huffington Buys $8.5M SoHo Pad Arianna Huffington recently purchased a 2,400 sq. ft. loft on Mercer Street. Original[...] April 5, 2013 / Allie Early / Tags: Arianna Huffington, huffington, huffington post, New York, soho apartment, soho loft, soho luxury loft, soho luxury real estate, soho real estate