How can I add a room key to my Apple Watch?

Name: Park Terrace Hotel
Address: 18 West 40th Street, New York, New York, 10018, USA
Telephone: (212) 781-6400
Price range: $$$

When you add a room key to Apple Wallet on your iPhone, it is automatically added to your paired Apple Watch. Once your room key has been added, simply hold your Apple Watch near the reader to unlock.