If you don't see a time slot when booking, don't panic!
There are two possibilities:
The calendar shows “Choose this day”:
This means that the hotel operates on reservation requests. Simply select a day, and the hotel will contact you within 24 hours to arrange a slot.
The page indicates “No slots available":
In this case, you can contact us by proposing a few desired slots. We'll check with the hotel to see what's possible.