Single switch controls GFCI outlet and lights
The apartment "electrician" is correct.

The feed for the receptacle is going through the switch. Probably so things don't get left on when someone has left the room. I agree it is not the way it should be but you can't change that.

You could replace the switch (or have the "electrician" replace it) with a lighted switch or a combination switch / receptacle like this and wire the receptacle always hot like it should be. (The lighted switch is lit when the switch is off.)

Either way you can have a night light.

Good luck and stay safe!