My bedroom walls are the last ones to be decorated. Today, I found a photo I took at the National Gallery in Washington, D.C. which may be the inspiration for a bedroom motif. I think if done right, this could be pretty tasteful.
The photo is of The Sirens, a sculpture by Auguste Rodin.
Another piece which would fit this theme is Nymphs and Satyr, by William-Adolphe Bouguereau. Many years ago, my mom gave me a card with this painting on it. Lucky Satyr.
It also strikes me that if I had a girlfriend, decorating my room with mythological sirens would probably not be on my mind.