Most Soho penthouses are spread across warehouse space–so it’s unique to see a floorplan with a large, sunken great room. But that’s what you get with the penthouse unit at 154 Spring Street, in Soho, which has just hit the market for $9.95 million. A private key-locked elevator opens to a 4,131-square-foot pad (with an extra 875 square feet outside!) lined with arched windows and skylights. There are three bedrooms over three floors, plus lots of fancy interior touches that include a glass staircase.