I would recommend you to re-do the walls, since the quality looks a bit messed up. Did you set the room then resized it? That lowers the quality of your walls, be careful with that
You should also watch for the corners of the icons, since they stand out from the background they are in (K) or interfere with surrounding objects (V)
But it's still good for a start!
Also make sure your room is connected to other rooms, it looks like it's in the middle of the street or something xD