Eco-friendly hotel, natural ventilation systems, operable windows, clerestory windows, solar chimneys, wind towers, green roofs, living walls, air-side economizers, heat recovery ventilation, radiant floor cooling, displacement ventilation, underfloor air distribution, air purification systems, odor removal technologies, high-efficiency filtration, moisture control systems, condensation prevention, thermal mass integration, passive design strategies, building orientation optimization, fa\u00e7ade shading devices, external solar screens, natural daylight illumination, soft warm lighting, panoramic views, luxurious interior spaces, minimalist d\u00e9cor, sustainable materials selection.