The open living-and-bedroom area of Ian Hague’s rural retreat can be divided by a wall that rises from within the master-suite platform. Interior designer Elaine Santos blended her client’s collection of vintage furniture with no-fuss pieces like a Shaker-style bench by Ilse Crawford for De La Espada. The dining chairs are a 1959 design by Arne Hovmand-Olsen for Mogens Kold.