Brooklyn-based designers are the hosts behind this beautifully preserved 1968 A-frame cabin on six acres of unspoiled land in Milan, a short drive from Red Hook and Rhinebeck. Stocked with vintage Danish furniture and objects sourced from the owners’ travels, it has an alluring midcentury spirit melding wood, a stone-surround fireplace, and floor-to-ceiling windows with large swaths of sky blue and sunny yellow fixtures and furnishings. There is a picnic table for patio lunches and a fire pit that elevates evening aperitifs, but the home is at its dreamiest come morning, when sun streams into the loft bedroom.