[spinchange]

Most hotel WiFi networks enforce device isolation too, so I don't think you can 'see' the chromecast even if you could authenticate it. The workaround is to create your own hotspot, bridging the hotel's WiFi to your own 'travel router,' using a laptop.

At that point, it's probably easier just to watch Netflix on the laptop... :-/

[habosa]

Chromecast has guest mode now, you can set up without being on the same WiFi network.