I love the idea of a separation wall with an inbuilt fire which creates a feeling of warmth throughout especially against the light, soft grey paint. It adds in a subtle way element fire to the white-grey (metal element) interior.
corner gallery wall - without the specially made corner frames. Would need to be on a corner that is in an open area; this would be really overbearing in a tight hallway. But in the right space it could look amazing. Very art gallery.
the fireplace is the focal point. There is a big contrast from the mostly white room and the dark, somewhat shiny fireplace. The partial wall behind it also frames the fireplace, making it the focal point.