In this stage of Doors and Rooms 2, you will have to use item combination to figure out the password and escape.
This walkthrough has been divided into different sections to help you backtrack (Quiz and Bonus) if you have already passed the stage. If you are aiming for 100% three star completion the first time around, simply follow the steps in order.
1. Rag: Grab the rag on the coffee table.
2. Soap Bottle: Get the soap bottle on top of the cabinet.
3. Wall: Use the soapy rag to clean the dirty wall to reveal the hidden password: 9181.
Bonus Star Location
B1. Obtain the Star-Shaped Clock on top of the cabinet.