very strange - perhaps they decided recently that making money off families is more important or that kids cause more trouble than the revenue they stand to lose by excluding families...

it definitely had kids free in existing beds language before when we planned the trip
expedia still lists it as well - so if you book it via expedia and print out t&c they will absolutely accommodate you...

Children and extra beds

• Children are welcome.
• Kids stay free! Up to 2 children 12 years old and younger stay free when using existing bedding.
• Rollaway/extra beds are available for EUR 60.0 per night.
• Free cribs (infant beds)!