I know it’s probably not what you’re looking for in terms of budget, but I use an Apple TV with a portable router called Beryl AX connected to an USB Drive when I’m traveling. To any hotel’s dumb TV I connect the ATV, and then my router through Ethernet. And there you go, all my travel drive to see and use with Infuse.
Infuse is super powerful and through name parsing you get this media “wall” interface, just as Netflix so to speak. You a get zero ad experience over all.
On the plus side this Router can connect to any Wi-Fi and re-route the traffic (kinda like a repeater but fancier), so you get your own private Wi-Fi and your ATV has also internet.
Edit: I don’t know about any of those systems you mentioned, but using a ad-filtering DNS (like AdGuard) you may be able to stop ads over there. It worked for me with Tizen OS.