For a four-bedroom seasonal getaway in East Hampton, a multifaceted art collection is combined with decadent furnishings and sumptuous finishes—achieving comfort and an air of old-world luxury but with a fresh, contemporary take. While the upper floors are light, airy, and tied together with varied artworks, an entertainment lair in the basement is colored a rich, deep, and luscious green that evokes the bygone era of social clubs. Although starkly different in spirit, the two distinct areas of the home are united through carefully executed combinations of refined finishes and warm, sensory objects.