Computer wakes up during night on its own

I've had the issue with my desktop for ages and now, after upgrading to Windows 10, my Asus laptop started to do the same - wake up during night w/o reason.
I followed this post to check:
powercfg –lastwake
powercfg -devicequery wake_armedand disabled wake-up settings for my mouse and network adapter. This didn't help.

Next I followed this post and disabled the wake-up settings of the task:

Problem solved at last :)