Blurring the reflections means decreasing the "glossiness" attribute, the glossiness samples will make the blurring smoother. (all this will increase render time depending on how much blurring and how smooth the blurring is set to be) In the "BDRF" section you may need to check on fresnel reflection or change the 0 and 90 degree reflectivity because I'm looking at the ref pic and the material seems to have angle based reflectivity.Originally posted by GecT
....I think the key attributes that need attention are reflection based, like blurring the reflection, a reflection fade color (especially for those floors) and the BRDF settings.