We found the top of a door frame a good place to secure a long ethernet cable. There are other creative ways to incorporate into wall decor. In an office with a drop ceiling, just run it through the ceiling.
Discussion
I have been doing this for 9 years so I have experience running long Ethernet cables. 😂. It's in another room... About 20 feet to get to the door, then up and over and around the corner into the room with the computer (another 25 feet)
... That would be a pain and could be unsightly... If I owned the place I would do it
.. but don't want to tack it all in place if I end up moving again...