The first demo shows the interaction features to allow the user to move around the floor and also to select on a piece of furniture that you can change the type of material:

Left-Click on the floor where a hover icon will appear to move there.

Left-Click and drag to look around the scene.

Left-Click on the blue rectangular box to select the furniture to go to it and start orbiting around it. The furniture description will also be shown and can click on the different textures buttons to change to that. Click on the floor to move out of this mode.

The second demo shows the standard of visuals that can be achieved. The scene is a room with a few furnitures and appliances. It takes 26mb to load this scene. The larger the scene and number of objects in the scene, the larger the amount required to be downloaded and also to develop.