Your description could match many different roses.

I would suggest you contact someone at Hearst Castle and see if they can help you reach the landscaper or a guide who would be able to name that variety. Best of luck!

They list every plant except roses.

Here is a link that might be useful: Hearst Castle

Jocelen Janon has posted some of his photos of the Hearst Castle roses on Facebook.
If you are on FB you should be able to view his photos.
He includes several pink roses:
Shot Silk, Charlotte Armstrong, J Otto Thilow, Talisman.
Burling Leong, formerly of Sequoia Nursery, and now with Burlington Roses created the standards that are planted at Hearst. If you figure out which rose you desire, she may have it.

Burling's page on HMF:
http://www.helpmefind.com/gardening/l.php?l=17.18773

Janelle

Here is a link that might be useful: Hearst Castle Rose photos

Thanks everyone, for your comments and links!