Ikea bunk beds can really pack 'em in. I used to wonder why slumlords were slumlords then I read an expose on illegal slumlords in Guangzhou renting to foreigners. Turns out, when you have one tenant you can only get so much. But ten tenants pay a LOT more in rent. They were all convicted years ago and reducated through labor. Last I heard they were having the same problem with landlords in Yiwu from what I heard.