giving a royal welcome; extending every courtesy
Fixed phrase used to describe treating a guest with the utmost hospitality and respect. Often appears as 下にも置かぬもてなし or similar.
He received a royal welcome.
The company president welcomed the visitor with every courtesy.
Kana spelling of the verb part; less common but still seen.
Literally 'not even placing (someone) down', implying that the guest is treated so well they are never set aside. The exact historical derivation is uncertain, but the phrase is conventionally associated with extreme hospitality.