A marine cabin comprising a plurality of wall elements and a ceiling element fitted together to form a cabin module, the wall and ceiling elements each comprising a structural body and a decorative finish thereon, the structural body comprising a core layer (4), the core layer being covered on a major front surface thereof by a decoration layer (6, 8), wherein the decoration layer forms the decorative finish and has a decorative surface, wherein the core layer is composed of a non-combustible non-metallic core material and the decoration layer is composed of a non-metallic fibre-reinforced resin matrix composite material.