I'd use at least part of the space to build storage like a pull out pantry and set it on long drawer slides. Or a couple of them stacked. Between my toilet and my vanity cabinets I built a dividing cabinet. The dividing cabinet carcass is about 48" tall, maybe 12" wide, and about 30" deep. That cabinet carcass holds a small pullout drawer up top and a larger pull out "pantry" in the lower portion. The lower pullout pantry is on 28" slides and it's divided in two with a vertical partition, and on each side of the vertical partition I have a few shelves. When the pantry is pulled out one half faces the sink vanity and the other half faces the toilet. The part that faces the sink is used by my wife almost like a medicine cabinet. The shelves are only about 4" deep, so it suits that purpose just fine. The shelves that face the toilet are deeper, about 5", deep enough to hold rolls of toilet paper, paper towels, cleaning supplies, etc. Since you have a 45-degree wall to the left that would hinder access, I'd just make a unit that opens to the right. You could get 10" deep shelves for decent storage. I'd say to rip and replace the walls, but I see the shower valve is on that wall and you already have a niche in the shower on the other wall. Regardless, be careful with the plumbing since it's a wet wall. The room on the left is laundry? Can you access any of the space from the laundry room for wall storage on the upper parts of the wall? Use the lower part of the cavern for a pullout pantry accessible from the bathroom, use the upper part as in-between stud storage accessible from the laundry room.

Can’t tell much about the room from the picture, but perhaps a simple contemporary chair facing in ? I think the console & framed photos or art look fine ( again, from what little I can see). The television is at an appropriate height.

To me, the point of keeping it would be because it’s original to the house ... so I wouldn’t paint it or modify it. If that were the case (not happy with present looks), then I’d just remove it. But it looks like you decorate in this style, so I’d embrace it as is. :) I know you said something non-plants, but there are very realistic faux plants, if you change your mind. And I’d use smooth black stones or colorful pebbles. Just quick examples, there are so many places that sell faux plants — https://www.afloral.com/products/mother-in-laws-tongue-in-variegated-green-24-tall?gclid=EAIaIQobChMIh5yYxKPP6gIVhYbACh2ekwygEAQYAiABEgJYIvD_BwE https://www.afloral.com/collections/silk-flowers-silk-plants-greenery-leaves-grasses/products/faux-fern-leaf-bunch-22 https://www.afloral.com/collections/silk-flowers-silk-plants-greenery-leaves-grasses/products/artificial-eucalyptus-spray-in-green-and-grey-pse331 As the unit is very closed-in with the door, and has lots of hard elements around, I think plants would soften the area, and provide nice interest and texture from both sides ... as well as have a simple and organic feel that would mesh well with whatever decor you use on the shelves.

I think it looks great, sentimental art is the best kind. :) I like the simplicity and focus of it being there alone … brings to mind an important piece in an art gallery. I wouldn’t add more art or enlarge the frame — it has meaning, it isn’t just wall filler. I also wouldn’t put decor on the pretty shelf. Again, sometimes simplicity has the most impact. So sorry to hear about your fire, glad you’re ok. <3