Originally Posted by paul_nl
No, this one is different.
Just select mainz, germany for 1 night with check-in on june 16th.
You will get the list with 3 hiltons, Frankfurt, Mainz and Mainz City.
Both hotels in Mainz will show no-availability.
If you select either one and press check availability on the next screen you will see that there are still enough rooms available
The same thing happens at Hilton Lac Leamy in Canada. In fact, this hotel routinely shows no availability on weekends and can be booked by using the method you've described. I reported this problem to Hilton last year and just received the standard automated reply.