For me, I am choosing 1, if I am having a wooden floor, I would rather paint the walls. Or keep the walls and re-carpet it.

I would probably re-carpet myself. Something soft so it’s a more cozy space, where you want to be relaxing barefoot (no shoes allowed kinda deal).

I would always leave the “brick work” exposed. That being painted is a crime, as it is a center piece of the room. I also don’t think I would paint the beams black, I prefer them wooden.