This might work instead of an L shaped couch. It would block less of the room visually and still fill that space.
8 Types of Corner Sofas to Save Your Living Room Space - corner sofas - Do you intend to purchase a corner sofa? Do you know what your living room need exactly? There are several types of corner sofas waiting for you and the co - Couches & Sofa
Grey living room with picture wall
Lansdowne L Shape Sofa, Corner Sofas from Sweetpea & Willow.
Small living room layout ideas - Modern Home