I have the Hifi in our living room and as you can see (from the following pic) room treatment wasn't really needed once the room was properly furnished with our favorite things.
https://media.distractify.com/brand-img/v6qRkZ-ac/2160x1131/sandra-hoarders-clutter-1559584060509.jp...
DeKay
https://media.distractify.com/brand-img/v6qRkZ-ac/2160x1131/sandra-hoarders-clutter-1559584060509.jp...
DeKay