Can you tell me more about the benefits of the water softener? 

The De Longhi Water Filter Softener, thanks to its innovative system, optimizes the water taste and helps to improve the taste and aroma of your coffee.
It also helps the machine's performance and efficiency by helping to reduce limescale build-up inside the coffee machine.
The use of this filter reduces the frequency of the descaling, but it will be necessary to do so whenever the light on the control panel will flash.