I feel as though there would be a different tenant in the modern era. Some would be migrant young men trying to save every dime, but many would be those suffering mental illness, and they'd fill the unit with tons of stuff. Can you imagine how much more stuff Americans have these days than they did back in say 1900? I genuinely think that the volume of stuff/garbage would be a legitimate fire or structural hazard. No landlord would want that. Back in the old days landlords had a lot more ability to force out any tenants they didn't want.