B&H , Adorama do not deliver to hotels (even if you use a credit card). COD is possible but you'' have to wait at the hotel lobby to personally sign off.
I have tried that before but no success. B&H can do hotel delivery but COD and there's no confirmed timing on the delivery.
Adorama and B&H do deliver to hotels. But you will need to pay through credit cards. They will accept international credit cards but will require you to fax/email them a photocopy of it for verification.
I can vouch for this as I received a shipment from adorama two weeks ago when I was in the US.