Placing the speakers so they are partially blocked by furniture is less than optimal. HOWEVER! Most of us who do not have a room dedicated exclusively to music/HT find ourselves forced into making compromises.
The sofa is only a foot from the left speaker. I'm not the most discriminating listener, but I don't really notice a difference between the right and left speaker, though I suspect there is, probbly, a subtle one. I could be wrong, but with your furniture at least 3 feet from the speakers, even though the lower woofers will be visually blocked, I don't think your sound will be adversely affected to any significant degree.