Create a hyper-realistic 8K architectural cross-section rendering of a multi-purpose room in a 17th-century Mexican hacienda, blending rustic charm with modern design elements. The floor features square terracotta tiles in their natural color, with thick grout joints, laid at a 45° angle, and a polished finish that reflects the natural light streaming through large windows. Black stone arches add an architectural touch, enhancing the historical charm of the space while providing a traditional and elegant atmosphere. Incorporate Japandi-style pendant lamps that emit soft, ambient light, bringing a modern touch to the classic setting. The rendering should depict the room as if it were in a beautifully restored ancient building, maintaining the feel of an old hacienda in pristine condition, with both natural and artificial lighting enhancing the textures and details. Focus on creating an atmosphere of harmony between the rustic past and refined contemporary elements.