One of the best ways to understand this is to imagine a multi-storey car park. Concrete exterior walls, support pillars and wide open spaces. Now imagine it being a hotel. All the internal walls and ceilings could go anywhere. What you need is sound/heat insulation and somewhere to hide all your pipes and cables.

Quick, clean and crisp-looking are big concerns from the constructor and operators’ point of view. Whatever methods and materials work best will tend to become industry standard.