We've known since late July that there was a deal for the 5,083-square-foot, floor-through Unit 1005-1006 at the Heritage on the Garden in downtown Boston. And now that deal has closed. Recall that the 10-room condo includes not only a landscaped terrace and a library with a fireplace, but 67 feet of frontage on the Public Garden. It was understandably, then, asking $15,000,000 through Daniel A. Mullin & Associates. It got that—and then some.