...For a variation on the same theme, spend the night getting pampered at a mansion. Rent out the well-appointed Rittenhouse Square Bed & Breakfast ($2,500). Then arrange for stylists from Pierre & Carlo European Spa to come over and treat you to a spa night, complete with massages, facials, manicures and pedicures, while you order in dinner from Rouge, Striped Bass, or Opus 251. Afterward head down to the lobby for a complimentary wine reception, chess playing and tarot-card reading. IN the morning, you’ll be treated to Le Bus breads, muffins and fresh fruit in the Parisian breakfast room.