I think a bench with no back would work better with your gallery wall. Right now the back of the bench is competing with it, and it makes it seem like the bench is too small.

I don't mind the table and mirror and can't really think of anything besides art that would fit on that wall. Can't see the table details well but could it be painted? How about red to match your lovely door? What would say "fresh and cozy" to you for that space? Have you thought of a new light fixture? A runner and a larger rug in the entrance could look good. I don't find the clock visible from the door to be welcoming so I'd be tempted to remove it.

@Maddy Jens congrats on the house it looks beautiful! I grew up in a 1929 bungalow with no formal entry. Your new space looks like there may be room for an entry to the right as you walk in. A bench (with storage) below the window and a thin profile console table with mirror on the wall to the right of the opening to the dining room? The fireplace seems to be the focal point of the room. Keep a couch with or without chaise add-on on the wall and perhaps round coffee table with two chairs facing the couch? If you need desk space that could go where the rocker is now, against the wall perpendicular to the fireplace wall. Beautiful house! Enjoy making it your own :)

" is there a way to tie the window and doors together without having to cut concrete? " No. I do not think that is concrete but there is definitely a header between the door and the round top unit. You "could" reframe the entire wall, redo the interior and exterior finishes but then you would be stuck with the fact that the round top is narrower than the door unit and will look awful set on top. Leave well enough alone until you save enough to get rid of the round top and the double door.