If you pay attention to the parquet in the sample render above, defective reflection has been identified. In fact, all objects in the real world show more or less imperfect reflection. In addition, the fresnel reflection is a dominant feature, especially on floors. Where our point of view is perpendicular reflects the opposite objects less, while the surfaces we look at from a narrow angle reflect more. This effect is particularly evident in floorings such as parquet and ceramics. I have attached an example of a real photograph, notice how the reflectivity increases towards the bottom of the coffee table. In addition, assigning a bump (relief) and reflection texture will increase realism in order to display small defects on the parquet, joints on tiles, etc. more realistically. You can experiment with imperfect reflection and fresnel parameters by opening sample render projects and examining their materials. You can download texture samples along with bump and reflection maps from
German 
French 
Spanish 
Portuguese 
Italian 
Arabic 
Russian 
Japanese 
Turkish 
