BY ODIGIE OKPATAKU

Cardi B is getting the royal treatment — Stefon Diggs hooked his lady up with an entire castle for their vacation in France … where they’ll be able to eat, sleep and poop like King and Queen!!

The rapper shared a tour of the temporary digs on her Instagram Story … and the place comes complete with a moat, dining hall, indoor pool and themed bathrooms!!

During the walkthrough, Cardi cracked a joke about the toilet — which looks like an elevated hole with a lid (don’t worry, there’s actual plumbing) — saying, “this is where we take the royal **** before panning to the tub, which is “where I will wash my royal hiney.”

Cardi explained the inspiration behind the New England Patriots receiver’s decision … saying she previously complained about not having the time to check out castles whenever she’s in Europe — so he took matters into his own hands.