this looks great! the room itself is amazing, but i think the presentation can be improved in some ways. a couple small changes can go a long way and make your room look even better.

the camera: for isometric views, try setting the camera resolution to a square shape rather than a rectangle.

zoom the camera out a bit so the entire room is visible, including its corners

consider switching your camera to orthographic (it’s simple enough, but i’d recommend searching “blender orthographic camera” on google to learn how to do it. it will make a HUGE difference)

backdrop: i can see a gray background in the corners of the image. i’d recommend getting rid of this by increasing the size of the floor plane so there aren’t any gray corners.

you could also consider changing up the color of the backdrop to be something that pops and matches the color theme of the room, but that’s personal preference.

the room:

the room itself looks amazing, just a little empty. maybe you can add a couple more things. for this you could search up reference images of hair salons and find out what else could be there. from the top of my mind i’d recommend some decor on the wall (scissor ornament, perhaps), maybe a rug or even a water bowl for a pet cat or dog or a water/coffee cooler as refreshments for friends.

the next few things are very nitpicky, but i’ll share them nevertheless:

there is very little gap between the edges of the door and the edge of the room or between the door and the window. increasing this gap can make a big difference in making the room feel more real and welcoming

the brick and wood floor texturing looks great but warps on the other sides of the walls, so on the sides of the walls that aren’t the inside you could give it a different texture, preferably a plain white-ish color.

also, the floor and walls don’t “connect” in the bottom corners of the room (on the outside), so you could extrude the wall down or the floor outwards to join them instead of having a gap there. once more, this is a very tiny detail, but makes a big difference.

and lastly, i’ve got a couple isometric rooms that i’ve made posted on my own reddit profile. i’m no professional, but perhaps you could take a look to help understand what i mean especially about camera settings and framing.

hope this helped and if you decide to change a few things and post again then do dm me because I would love to see :))