I think sharp edges is probably more modern looking? That's what I have and there's been no damage to any edges in the 2-1/2 years since installation.

These railings are custom. It's not like you can select parts and assemble them. Everything has to be welded. So if you are prepared for the $$$ of them contact a metal shop. Here are sources for staircase railing parts that can be ordered, but still have to be measured and assembled by someone. https://www.indital.com/ https://cheapstairparts.com/

Quarry tile floors are timeless. To update your living room, I'd paint the brick wall the same colour (or one lighter) than the rest of the walls but in a pearl or semi-gloss sheen. Add a large piece of art to the brick wall, a deep blue rug and a floor lamp and your living room will start to come together. What I'm most worried about with the LR is the furniture arrangement. It doesn't promote either socializing or relaxing. The spacing is wrong for a comfy chat and there's no convenient place to put a drink if you want to sit in a chair and read. Is the furniture yours of from the listing pics? In the bathroom, the first thing I'd do is replace the vanity light. It's far too 80s for the look you want. I'd be tempted to paint the bathroom a mossy green, get a fun, 50s-style shower curtain, some white towels and call it done.

Art work , plants and a parson type console table. You could move your little stools under when not in use. Something like this but shorter. A coffee table smaller than this. Plus a little side table for the sofa end. Lamp or lamps or sconces for console .