Ethernet wire does not introduce or capture any noise to its destination. All is taken care of by the checksumming and error correction codes.
There should be absolutely no problems. I use more than 100 ft of ethernet cabling almost everywhere in my house coz they all first go up into the attic and then down, and I experience absolutely no issues.
As long as you do not exceed the maximum length requirements of a category 6/7/8 cable, there should be NO problem.