A Tribeca residence once home to actress Keira Knightley is about to go back on the market for $6.6 million.

That is down from its original $8.4 million asking price in 2009.

The home at 16 Jay St. comes with three bedrooms, 2½ bathrooms and a home office.

The 3,800-square-foot space features dramatic double-height ceilings and a 900-square-foot landscaped terrace.

The seller is a fabric designer, painter and sculptor who added exquisite details like a cast iron-and-mahogany staircase, welded inside the home.