I would do this if I took it seriously enough. I can’t be bothered to get geeky/technical about it, plus I’m planning to move out soon anyway.
You would (possibly) be very surprised how much better your room would sound by just, as milkie has, putting twenty quid’s worth of charity shop curtains up on the exposed brickwork and in the corners. Even ready-made pro acoustic treatments are removeable, so would be an investment rather than just an expense. It’s also very easy to make effective treatments with Rockwool panels – the easy way, by just wrapping them in material and hanging them from the ceiling; or by making wooden frames to hold them. I get some pictures of my efforts up later.
If you don’t have the ear for it, fair enough; but working in an acoustically calmer environmnet will make listening to and working with music a much better experience. Until you come to understand the space you’re working in, or even once you do, reflections can make it very difficult to determine what you’re hearing from the monitors and what you’re hearing from the surface behind/beside/above you.