Reward nights give night and stay credit.

A quote from Hhonors :

'Your reward stays count toward elite tier qualification. And HHonors elite members will receive the elite point bonus on Base Points earned for incidental spending during HHonors hotel reward stays. It all adds up to putting you on a faster track to enjoying exclusive elite privileges!

This seems to be from an American page. The address is :
://hhonors1.hilton.com/en_US/hh/about/memlevels.do

I have removed the http as I can't get rid of personal information on Hilton pages and therefore don't want to give the link.

I also know from personal experience that reward stays give night and stay credit.