Congratulations on your new abode! Not sure if this advice will help since I can't see the wall opposite the window, but I'm going to assume that it's a solid wall and that there is no furniture there right now. I would move the sofa (and coffee table) to the wall opposite the window. Move the chair to the wall where the sofa was and close enough to the couch to create comfortable conversation. (As it is right now, the chair and sofa are too far apart for good conversation as one will feel that one must shout across the room.) Center the fish picture on the wall above the sofa in its new location. Look for some brass wall candle holders / sconces to place on either side of the fish picture to balance it more with the size of the couch and fill the wall. The brass will go nicely with your nautical theme. Place the lovely round side table with the lamp in the corner between the couch and the chair (with some coasters for tea). As for the niche, treat it as a place to diplay a piece of art/sculpture. The sailing ship will work well. It just needs to be raised and centered (side to side and top to bottom) in the niche. (You can find small shelves designed for holding pictures at tjmaxx, marshalls, places like that. Find a shelf that will accommodate the width of the base of the boat.) For balance you might choose to place a bookshelf or side table under the niche. The bookshelf height should come nearly up to the bottom of the niche. This will help the niche and the bookshelf to feel connected so that they visually "read" as one unit. Thus, you will not have a "floating niche". If you have a lower table, add a lamp. This will help the table to connect to the niche. If you can handle bold color, pick the dark navy in your sofa and paint the wall behind the sofa (new location) and the niche wall dark navy. But only these two walls. This will help the room have impact. While keeping the other walls connected to the other rooms to facilitate flow. The lighter color on the remaining walls will help keep the existing drapery connected as well as the lighter rug and wing chair. With these lighter elements remaining, the room can handle the dark navy. If you're not so good with bold color, find the dark navy on a color swatch and then pick the color two shades lighter. If that's still too much color, or you'd rather remain neutral, find a nice, darker tan and paint the two walls. I agree with earlier suggestions about placing a bookshelf open on both sides perpendicular to the wall near the door. A lamp on the end of the bookshelf next to the wall would be helpful. Fill the bookshelf with conch shells, green glass bottles, some leather bound books or other nautical items/sculpture. If you're thinking of acquiring more furniture, I'd hunt for an old leather sea chest or travel chest to put under the front window, maybe even a stackable set of vintage suitcases in your burnt orange / british tan color. Another chair (also in leather?) could really be useful. Don't be afraid to experiment. It's your house now!

I would use a 1"x2" light travertine tile, honed, laid vertically to the ceiling. I would do an inlay above the stove all in the same color stone, such as a harlequin shape framed by a 2"x12" chair rail. Simple, yet pulls together the cooking area and looks structural. Now you have a focal point.

I think you solved your problem, don't buy any house plants, because if you neglect them then you are not enjoying them. Plants in-doors and out, need a good parent. I only have one plant, a small one on the coffee table in my living room, we get along fine and I take the time to make sure it gets what it needs, water, light, good soil. If you don't have time, no problem........just buy something else interesting for you home. Its OK not to have in-door plants. A lot of people have mentioned MILT, but I don't like them........If you must have a plant, just buy some flowers at a local market that are in season, then when they fade away, wait a week or two and buy another bunch and enjoy. Just try and stick with Local in Season fresh cut flowers. Its August not much blooming, but a few tree's have lovely Autumn flowers, and of course, gourds and a pumpkin will soon be available.....Mix up your need for a plant with these ideas. Good luck.

Try an 8ft round one. It will look wonderful with your table. Also don't do Brown. Do grey tones instead..Is that purple I see in your chairs? You could pull that colour out too if you can find a mix. Try Wayfair online. They have lots of interesting choices. Try a small round table with a black frame in between the two wing chairs. Nothing on the outside of the chairs as you will then have two more things to protect from wagging tails. I thing having the small table between the two wing chairs protects your coffee and wine from canine mishaps. Nesting tables are possible and I've seen some nice round ones. That way you'll have some more surface if needed and it wil give the space between the chairs more visual weight.