A coastal living room centers on a round porthole window framing the moonlit ocean, set against terracotta plaster walls and a polished concrete floor. A soft gray sofa and woven lounge chair anchor a blue wave-patterned rug around a whitewashed driftwood coffee table. Billowing white linen drapery softens the aperture, while a stone-slab hearth with LED underlighting and discrete step lights cast a warm, low glow that highlights natural textures.