Placing your washing machine inside a cabinet under the wash basin in a 10x5 ft bathroom is possible but may lead to issues. The vibrations during the spin cycle could cause structural damage to the cabinet and create noise. Ensure the cabinet is sturdy, has proper ventilation to prevent moisture buildup, and provides easy access for maintenance. Using anti-vibration pads can help reduce movement. Also, check plumbing and drainage feasibility to avoid leaks or water damage.