Name of Apple TV device

On your Apple TV go into settings - AirPlay and HomeKit and change it in that to reassign it to another room

Alternatively you can also do this on your iOS device (or Mac) by using the Home App.

• On your iOS device open the Home App. Under Rooms, tap on Kitchen, find your ATV, deep press on that, use the gear icon, lower right to bring up settings and change the room it’s in - tap on the “kitchen” in orange

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What is your model Apple TV? Identify your Apple TV model - Apple Support

The Apple TV (4th generation or later) has a name and a separate room designation (for HomeKit and AirPlay).

The name can be set in Setting﹥General﹥About﹥Name

or Settings﹥AirPlay﹥