Any hourly rated hotel in Guangzhou airport and how do i book it?

i plan to fly from Singapore and will reach Baiyun at 01:00, i will then transit to XiNing before 12:00 (on the same day)
1) Is there any hourly rated hotel in the airport
2) what is the charges per hour
3) How do i book a room for 3 pax

4) a)From international flight to domestic one:
Get off the plane → Health declaration → Frontier inspection → Baggage claim → Customs inspection → Report to airport transfer desk → Security check → Wait for boarding in Departure Hall

For the flow above, do i check into hotel before custom inspection?