When I did my undergraduate at Hebrew U, anybody who lived in the city lived at home, since the dorms were a for STEM campus were old British barracks from WWII, no heating system, so kerosene heaters were supplied, but electric heaters were banned, no AC, and no insulation, and rent elsewhere was unbelievably expensive. So, after 3 years in the army, I moved back home for 3 years. It was a good thing that tuition was extremely low ($1,900 a year in today’s dollars).
I went on to do an MS and a PhD, so I guess that it worked.