Two bunk beds.

两张双层床。

youdao

And it has two bunk beds, so it can sleep four people.

NPR: Law Stands in the Way of Sturdy Katrina Cottages

Promise was a freshman at Shanghai Normal University, where he studied economics and shared two sets of bunk beds with three roommates.

NEWYORKER: The Grand Tour

Kingdom, and all have two separate sleeping areas plus bunk and trundle beds.

BBC: Openings: Bangkok, Austria, London, Hong Kong