@hsounds Yes, all good advice, thank you, but I am in one of those situations where my listening room is also my living room with the kitchen off to one side.
I put drapes up on the widows to one side and bought some 2' x 4' x 2" thick acoustic panels for what wall space I have and honestly, I don't think it sounds any better than it did before the treatments, it also looks like crap.
Having electrostatic speakers I saw where one reviewer said the sound improved dramatically when he put some acoustic panels on the walls behind the speakers. I I did this in my situation, and it sounded awful, just sounded very flat.