Use the MUG OF WATER on the nightstand to clean Aurelioâ€™s wound (K).
Take the HEART, which was located under the hand towel (L).
Insert the HEART into the base of the painting (M). Start the mini-game.
Complete the mini-game by recreating the events in the poem about Selenaâ€™s battle with the Sea Serpent:
Open the door to find the keyhole behind it.
Open the decorative piece. Take the key.
Insert the key into the keyhole. Turn it.
When you turn the key, the animal in the water changes. Select the WATER SERPENT.
Select the lever on the right to change the celestial body. Select the CRESCENT MOON.
Select the lever on the left to change the position of the female figure. Select the middle position.
Select the rocks to clear the way to the serpent. Select the cells that appear to reach the serpent.
After you play the mini-game, a secret compartment behind the painting will open.