You didn’t ask but I don’t think that color works at all with your beautiful wood. I would be tempted to paint it all a nice warm white and then add color with artwork.

I have to agree the gray with the natural wood is really not working. As for decor art is always my first choice . Accen twalls need to have some connection to something so if I want to add an accent wall I usually use a color from a piece of art . You really need to post pics of spaces further back to show the whole space. I have no idea why a plank wall in green would be a good choice .The mirror needs to go for sure , mirrors need to reflect something worth seeing twice .

Not all walls require adornment. Sometimes having a blank wall is restful for the eyes. Direct the eye toward something bold and beautiful. Start with ONE large piece of art that you love on the biggest wall.

When I saw pictures immediately thought terrible wall color for that wood. Read the comments and that seems to be the consensus. No amount of decor is going to help if the background is off. Are you open to painting?

Definitely open to painting. This was the colour most of the house was painted when we moved in.
Fair enough about the accent wall, it was just an idea. I could replace the mirror with a nice piece of art and go with a white background. Couldn't get much further back for the photos, don't have a wide angle lens on my phone.

Based upon the pics the home looks... confused. It has both more traditional/transitional elements and more modern ones, and as mentioned the paint and woodwork don’t go well together. You have such opportunity here and will really be able to transform this space by bringing things into harmony. What a fun challenge! Agree with white paint (I have painted 2 houses SW Whipped Cream and it’s gorgeous), new light fixture, some large art pieces. Please share pics when done!