Hey! I've been using the KRK RP7 Rokit 7 G4 monitors for some time now, and they've been fantastic in my studio setup. Regarding room size and acoustics, these monitors are quite adaptable. However, proper positioning is key. Make sure they are at ear level and form an equilateral triangle with your listening position for the best stereo image.
For room treatments, start with bass traps in the corners and some absorption panels at first reflection points. This setup really helps in cleaning up any muddiness and controlling reverb.
As for handling different genres, they are pretty solid across the board—from hip hop to classical—they maintain a good balance and clarity without coloring the sound too much. Definitely a distinguished choice for detailed mixing work! Hope this helps!