Willie G's Seafood and Steaks has broken ground on a new location in The Post Oak, a master-planned development with a 38-story, mixed-use tower and adjacent ballroom on 10 acres at 1600 W. Loop South, owner Tilman Fertitta announced. The 680,000-square-foot tower will contain 250 hotel rooms, more than 150,000 square feet of office space and 20 apartment units. The Sembler Co.