You must separate them by type:
Anything organic, like food, fruits or vegetables. Also small pieces of paper like napkins but nothing that contains metal or plastic.
The washing and dryer machines are shared. They are located in the basement. To go there, open the small white door at the main entrance of the house, after the stairs open the second door at the left, it has a picture with a washing machine. There is a table with soap and softener.
The buttons on both machines are in German and French but they are generic and self-explanatory. If you need help you can ask us.