Hot water may take longer to get to your apartment’s sink or shower for a few reasons. If you are the first person to turn on the hot water in the morning in your area of the building, then all of the cold water that was in the pipes overnight has to be pushed out before the hot water will start flowing from the water heaters in the basement.
This is slowed down by the “aerator” on the end of your faucet, which limits the water flow to 2 gallons of water per minute. Therefore, it may take several minutes for the cold water to get out of the pipe and the hot water to arrive. If you are going to take a shower, the hot water will come faster if you run water through the tub spigot until it is hot, and then turn on the shower.
Conversely, if the person in the apartment above or below you has used hot water recently, it may take less than a minute for the hot water to arrive.