Hot water lasting only for 1 minute
If the water heater is a tank type heater the dip tube for the cold water inlet may have broken off or become dislodged. Shortly after you start to shower the cold inlet water mixes with the hot water at the top of the tank and you get a cold shower. I would ask the other tenants if they are having the same problem. You could also try drawing hot water from another source such as a sink and see if you get the same results.