Yes - I still have a brilliant Satechi travel router that has mutliple AC inputs, USB charging ports and ethernet input. its main purpose is to create a local wifi from the ethernet internet connection.
But I am finding that very few hotels now provide an ethernet outlet. They mostly want me to connect to their wifi, which I don’t regard as secure.
Regarding streaming, some services allow you to download shows to a Mac. So if you can get Airplay working directly between the ATV and Mac then consider temporarily downloading a few shows over hotel wifi and delete them after watching.