Yes, I did read the same thing after your last post. So that particular mirror may be slightly off in width if my math is correct. Good thing about the quatrefoil mirrors, if that is what you chose, you can most likely find another that is wider. I would take some newspaper or something else and cut out a paper version of the mirror in those same measurments. Tape it up with some painter's tape in the space to help you visualize.

Nice place! I like the idea of a portico. When you repaint, I would also paint the chimney. I was going to suggest replacing any wood on the house with painted cedar shake, but the board and batten leans to the beach/farm/lake look also. Have you decided on the color? I see you have a nice lake view. We just gave up ours. I am still somewhat sad about that! Your current DR chandelier will look nice in the foyer and start the vibe you want. Then add a chandelier with some crystals in the DR. This one is also in the same collection and has a few crystals. Depends on how matchy-matchy you want to be. I could also see one of Viola or Chappellet by Arteriors in your home - something with large beads, or even sea glass. DD1 has the small Viola in her walk-through-closet-turned-room. It has a little rope/twine on it, but I do worry about how dusty it will get over the years.... and don't think I would do a large chandelier or orb covered in rope. Same goes for the wicker/woven basket like fixtures - how do you keep those clean?! My handyman is about to arrive for the day. I will try to post a few more ideas later. I like the last photos you've posted. The only thing I worry about in your home is the traditional chair rail and wainscot, but painting the walls and trim the same color will help it fade away a bit. The flooring looks like red oak, and it will be a big job to even get it close to the flooring in your photos (which is what they are calling European or French White Oak). We just installed French White Oak in our new home, and love it. There is a thread about lighter flooring floating around - you can search for it, or click on my name/profile and see my activity, as I have posted on that thread. I also have a large thread and a few smaller ones on our current home/project, if you are interested.

Are we talking about the "entry" right at the front door? Or the space up on the step up area toward the stairs. Basically, though, it's the base of the table that will somewhat define the style. The more rustic, it becomes more "Mountain lodge" and the more refined it can go modern, contemporary or even more "transitional". They are also pretty expensive so before you invest money there, figure out how much you want to or can spend now, and then start selecting things you like and create an "Ideabook" here on Houzz. That will help you "define" which style direction you like. You can "like" a number of styles, but ultimately one will become more apparent than others.

Looks good as is. Wouldn't clutter it up ... but you might consider small Tiffany style stained glass sun catchers (that attach to the small windows with suction cups) if you find some you particularly like. https://www.google.com/search?q=Tiffany+style+suncatchers&client=firefox-b-1-d&source=lnms&tbm=isch&sa=X&ved=2ahUKEwiKg5u24eXoAhWnTN8KHSnCDkAQ_AUoAnoECAwQBA&biw=1366&bih=654 Suspect the space may be so narrow that framed art on the wall gets bumped. Measure carefully before deciding. Depending upon the pattern, wallpaper could end up just making a calm space just look "busy" without adding interest to the space. If you like nature scene murals, you might consider visually "enlarging" your space with one of those on the plain wall just before you go down the steps. https://www.google.com/search?q=murals+of+nature+paths&client=firefox-b-1-d&source=lnms&tbm=isch&sa=X&ved=2ahUKEwij672S4uXoAhUpnOAKHRnJBQQQ_AUoAXoECAsQAw&biw=1366&bih=654