I think you can try it on that wall-it seems light, will take just a smaller nail or two? but if you decide to go for it-I wouldn't leave it there alone. It somehow begs to be part of some composition. Not other art next to it, but something on the floor beneath it. You say a console wouldn't work-then I'd look into something like a planter with a well, plant, in the corner, or a little chair/stool with couple of books on it, for example. A floor lamp. If you don't want to leave that wall bare, and are hesitant about different art for it-I think it'll need some neighbors. But put on different levels. Giving you this feeling of changing height a bit, so the eye travels. So I'd try it, and put some prop on the floor-something not too bulky-just to see whether it's something that might work. And then if you decide that's something that you like, you can think what actually might make sense next to it, while being pretty and hopefully useful at the same time.

There isn't enough room for an ottoman. Try a C-table or stool with no accessories on either. I think lighting is important for this room. I don't see any in the pic.

Move the TV off the fireplace, it's waaaay too high. Put it on one side of the fireplace with a low console (roughly 25-50% longer than the TV) under it. You can get a matching one on the other side for regular storage.

Beautiful trim, gorgeous floor the current color will work of course. Going more mid-tone can be pretty amazing too Is the apartment yours, or is it rental? I'm asking because I'd be inclined to go with custom shades as not to obscure that trim..but of course only if the place is mine And I'd pick probably woven grass ones. Shades of natural brown, you know? Or you can go with fabric too. But if the walls stay light-I won't go too dark. Same with curtains. Or. If it's curtains..look at many..you might get inspired by the color you see in ones you like a lot, and "borrow" similar one for your walls. Rug can become an inspiration too. Again, you really don't have to repaint to get the vibe you want.