剛剛無聊寫信去問 不到半小時對方就回覆了 效率很高！ 結論：的確沒得托運 而行李請自行從中部國際機場機場寄到飯店。
對方原文回覆如下：
Dear Customer,
Thank you very much for your interest in Willer Travel.
<Regarding luggage>
Unfortunately, for the bus from Chubu International Airport to Takayama, luggage check-in is NOT available.
Therefore, from the airport, please send your luggage by delivery services directly to your hotel.
<Regarding bus operating company>
Chubu-Takayama route is operated by bus company Meitetsu Tobu Bus (名鉄飛ぶバス）.At the boarding location, please locate the bus operated by Meitetsu Tobu Bus.
It isOT Willer Express bus.
Regards,
Willer Travel Customer Center