Are the two rooms on the same breaker/fuse (by some chance)? Another solution is ethernet-over-powerline where the data rides on your AC powerlines and is decoded at each end by an adapter. Supposedly they can get to the mid-hundreds of mbps, but only if they're on the same breaker. I used one in a rube-goldberg (Neighbor's WiFi)->(My Raspberry Pi, NAT Router)->(Ethernet-over-powerline)->(My WiFi Router) about 8 years ago, but the EoP was only good for a couple mbps because the signal had to go through the breaker. It was fine for poor-man's internet though.
You can get about 500Mbps at best, which is honestly fine for most uses.
That being said, I removed my EOP after I ungraded to Eero 6e's. The wireless backhaul was much faster than the wired at that point, and Eeros won't load balance between the two interfaces, so the hardwire was actually slowing things down.
Sure is handy when you need a cable and same-breaker sockets are nearby, though!
