How do I make a reservation from the Denver airport to the Microtel INN by Wyndham hotel?

You need to have the reservation already made so that you can pick it up in the shuttle.

And

There is a shuttle from the airport to the hotel. When your plane lands, call the hotel and they will send a driver to come pick you up. There is another shuttle that will bring you back to the airport when you are ready for your return flight.

Speak on telephone.

Yes