Interior designer and “high society tastemaker” Bunny Williams has just listed her classic six Carnegie Hill apartment at the 1185 Park Avenue cooperative. The apartment–now full of antiques she has collected from around the world–is asking $3.995 million with a maintenance is $4,685 a month. (According to the New York Times, she purchased it for about $900,000.) The two-bedroom, three-bathroom spread is on the fourth floor of the 15-story prewar co-op, one of the last in the city designed with a drive-through central courtyard.