If your villa is still under construction, wired KNX is almost always the better long-term decision. It is an open global standard, it is vendor-neutral, it keeps running when your internet drops, and it adds measurable resale value to a UAE property.
If your home is already finished, a wireless retrofit using Zigbee or Z-Wave modules installed behind existing switches delivers most of the benefit without chasing walls or repainting. Most retrofits in Dubai apartments are complete within one to three days.
In practice, many of our UAE projects are hybrid: KNX for the backbone of lighting and HVAC, wireless for the additions that came later. The right answer depends on your building stage, not on marketing.