De Gournay’s Sans Souci, a hand-painted silk wallcovering, turns the master bedroom into a little paradise. The valances around the window and mirror add an exotic touch and are upholstered in the same fabric as the headboard and window-seat cushion. Extra Silk byIsaac Mizrahi for S. Harris. Bedding, Schweitzer Linen. Ceiling in Benjamin Moore’s Blue Angel.