With a mere 12 million square feet, Hudson Square might be the city’s most in-demand subdistrict. The boom is reflected in Disney’s new Manhattan headquarters at 7 Hudson Square, Anthropic’s just-inked lease for all of 330 Hudson St., Google’s purchase of St. John’s Terminal and PayPal’s 261,000 square-foot lease at 345 Hudson St./555 Greenwich St.3 Leasing for the planned One Grand has been slow due the demand for immediate availability in Hudson Square. Taconic PartnersTech, AI and media firms, Hudson Square’s favorite tenants, are expanding all over town. “Two years ago, you couldn’t get arrested in Hudson Square,” Morgan joked. 3 One Grand will feature 20,000 square feet of outdoor space, a roof deck and expansive amenities spaces.