If you can find a way to make it work, I’d highly recommend looking into it. Nowadays there are far better looking options when dealing with a shared space. Unfortunately far to many neglect this, while spending enormous amounts on kit/upgrading kit. Typically a properly treated room will likely bring far more improvements then most upgrades. Most will be shocked at how much better sound they can get from what they already own.
I initially thought the art on the front wall was an absorption panel but I take it, its just art? Ideally you’ll want to fill those front corners right to the ceiling. And for panel placement, what you’ll want to do is look at first reflection point for each speaker on each wall. The absorption panels behind your listening position should take care of that on your back wall, as mentioned above, behind the speakers to take care of front wall reflections & ideally first reflection points of both speakers on each side wall, but looking at you pics, not easy to do without some re-arranging.
If you want to know where the first reflection point is located on each wall (including the ceiling & floor) for each speaker, this is a very handy calculator:
On a side note, what the distance between speakers & then also from a speaker to listening position? Know camera lenses can skew things, but have you tried the speakers a bit further apart & maybe a bit more toe in if required?
The canvas above the TV is one of my own creation.
Ultimately, the room is a lounge as well as listening room. I am looking at adding another set of bass traps on each side of the room, above the existing ones. Other than that I am not prepared to do much more.
Will take the height of bass traps to 180cm with 230cm to ceiling height.
To do room treatment you need to know what needs treating.
It’s no good just adding panels here and there hoping for it work.
Obviously it will change things, but as said unless you measure the room its all guess work.
I see that now with that last pic, the camera lens really does skew things, it looked like your listening position was about twice that of the distance between speakers. The last pic puts things in much better perspective
I realise that you have been through quite a lot recently and anyway the room treatment looks absolutely fabulous! Also probably sounds super good too.
In my case I also had a relatively large black glass to screen between the speakers. But last year I had one final innovation to solve that problem. I use GIK Acoustics art panels. GIK Acoustics will print a design of your own work on most of their panels!
They also do custom sizes of panels to suit without hardly any difference in cost.
In my case I had a first reflection triptych 242 absorber on the left wall that I moved to cover my screen as follows.
This triptych is moved whenever I watch movies. See images of both states of room below.
No doubt measurements are the best way to go about things but with that being said, it should be fairly safe to add some basic treatments, using “best typical practices” to an untreated room. In this case you should be pretty safe, that you’ll be doing more good then harm. Things like some properly designed absorption @ first refection points & some bass trapping is pretty safe (in most rooms you’ll be hard pressed in adding too much bass trapping, as you’ll likely run out of space before you’ve added too much ).