I followed the guide here: https://openwrt.org/docs/guide-user/network/wifi/relay_configuration?s=relayd and so far I am really happy.
There is only one thing that bothers me a little:
With this setup your LEDE device itself may only be accessible from those computers directly connected to the W-LAN AP, not from the ones connected to the LEDE W-LAN client only, when in the 192.168.1.0 subnet.
Is there no way arround it? Why can't I connect to the device when I am directly connected to it via wifi?
Thank you in advance!