The Hilton offers day rooms for transit pax for a lower rate, I did that back in 2012 for 6 hours in transit. Costs aprox 50€ for max 8h.
The AY hotel to put up transit pax is the Cumulus. Call your local sales contact and ask for a stopover accomodation if its almost 20-22h. Note that the cumulus is a decent place to sleep at, but not more.