If the room area is not very large, you can consider designing the gym in the sun room, which is a place with very good lighting and ventilation conditions and is very suitable for sports.

The floor made of sound insulation material, plus the floor mat in the gym's own weight area, and try to install mirrors around it. It can be seen that the action norms during training are not standardized, the ceiling is unnecessary, and the rest is the infrastructure. If you don't consider the fixed equipment, you can put a 360 equipment directly, and then train stools and dumbbells.