Airport PEK sleeping pod/in transit hotel?

I am traveling with AirChina and landing in Beijing Capital International Airport PEK on the the 21st December 2023. I am traveling on a South African passport, will i need a visa for a 15hr layover? The PEK website says there are sleeping pods in terminal 2 for international travellers. Where do I book a sleeping pod and find the prices? Is there an In transit hotel in the PEK airport?