A ruelle is a narrow space between a bed and the wall. It's like a little hallway next to the bed.
A ruelle can make people think of coziness, bedrooms, and maybe a little bit of secret talking.
Examples:
I found a toy car in the ruelle.
The cat likes to hide in the ruelle.
She sat in the ruelle and read a book.
The ruelle is a good place for hiding.
In the ruelle, there is a secret door to another world.
The ruelle is a cozy place to play.