Yes, these are small and crowded.
a tenement is a crowded apartment building built to become a slum.
Cooperatives are not associated with tenement living.
A multistory building divided into crowded apartments was a tenement.
One reason they were crowded is that many people had to share space with other families.
Life in a tenement was not good. It was really small and crowded. There usually was many immigrant families living in one tenement apartment. There was no plumbing. You had to get water from a faucet on the main floor of the tenement and bring it back up to your apartment. If you had to go to the bathroom there was a bucket for the whole tenement and when it was full someone had to bring it out to the street and dump it.
Many people had to share space with other families.