Quick and simple
This one does not require any items. The password can be found in the night period of the game by clicking on one of the bedroom paintings. 1407 in my case, may be the same for you.
Enter the cafe, if the first area is empty you must wait until the cook has come OUT of the room with the food generation machine. If the cook is in that first area, check the time. She seems to enter the second room on the hour, and you don’t want her to interupt you so be sure you have enough time.
When she does, run over to the keyboard and key in the password. Hide in the box as the machine starts to generate food. When the robot comes out of the freezer area, run in there and hide in the second box. Then just wait as events play out.