It depends. If the target is a high security facility that happens to have periodic bug & unauthorized WiFi sweeps this could be a great side-channel vector which could go unnoticed. Of course I'd hope the management of such a facility would know better than to put a smart TV in a conference room, let alone hook it up to the network but honestly nothing surprises me anymore. I've seen older smart TVs in secure areas not connected to the network, but within a hands reach of a network port.
That seems like a rather specialized worry since your average hotel isn't going to do any of this? It seems like you might as well go for a walk in a park to have any real conversation.
