Thanks Jamester and Jimboliguy.
I wondered, too, whether HHonors had such a reward. Thanks to you I was able to get one of these for April for a one night stay in Vienna.

I had one question which the Customer Service person didn't answer to my satisfaction. The Vienna Hilton is listed as having Point Stretcher availability during the time I'm there, although the reward I was offered was a Standard award. Is there such a thing as a Point Stretcher one free weeknight award? Customer Service thought not, but the agent sounded a little ditzy so I don't know whether to believe this.