CROWNING ACHIEVEMENT A grand but faded 18th-century estate, part of a legendary vineyard in Bordeaux, undergoes a dazzling transformation worthy of Marie Antoinette..."We didn't want to make a fashiony interior," says the Paris-based designer Michael Coorengel. "For us, decoration should look almost natural." So, when he and his partner, Jean-Pierre Calvagrac, set out to rejuvenate an 18th-century manor house in the Bordeaux wine region, it made sense to them to re-create a Louis XVI—style decor.