I like the way they did this harth and the color painted behind the stove. I also like the wood beams framing the stove in. Maybe have similar framing and the make a gate around the stove out of the same wood.
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Love this simple cabin living room: smaller stove on simple slab hearth, permanent bench/sofa. good for sleeping a person or two, storage underneath. Floor is perfect. Shelf over window optimizes the use of space.