GEEKS!
My room "treatment" consists of a bookcase to the left of my DAW desk, a KB desk to my right and amps and guitars piled behind me. Oh, my other treatment is a ceiling fan. Gives a nice swirly effect. EVERYTHING runs through a Leslie cab here! LOL!
Really, it ain't that bad. I only have 10'x10'. I monitor at pretty decent levels and also at conversation level. I do have to playback on a variety of systems before I put a "DONE" stamp on anything.
*sigh* Maybe someday I'll have more/better space(s) for my music hobby.
D