The photo below is my suggestion for colour of floor. Furniture should be darker - similar to below. For the rug - choose one colour from the artwork and find a similar coloured rug. Don't put a mantle over the fireplace - it could be a health hazard - bumps and bruises. Blinds - unless you want them to make a statement I think white - to match window frames would be fine.

Cool bananas. Now those accessories in those natural materials can be found in cheap places like op shops and garage sales. I have a very good collection from those. Got an iron candlestick there the other day for $2 and a pottery vase for 50c. Great for art too. Then there are Kmart, etc, they often have interesting ceramics , wooden bowls and candlesticks etcfor low price.

I agree with Mel N. It's a relatively closed space and I think with the frames and the light fitting, less is more. An obvious curtain rod would be a step too far I think - pleated curtains on a hidden track would be how I would go.

I note you have blinds already.We too have blinds and my light sensitive husband found the cracks of light down the sides woke him early. I stumbled over a place that sold ends of current fabrics at very reasonable costs so bought enough linen to match the wall colour and lined it with blockout lining.I made each curtain 90cm wide although once they are gathered on the 30cm long track they are full and generous looking. (so they only cover the edge of the blind) and have totally cured our light problem for well under NZ$100. We bought a metre of track and two fittings that allowed us to make two 30cm rails, using a hacksaw to cut it down. I too agree, match the wall colour so you have a good plain backdrop for duvets and accessories in the room. I'd be hesitant about a feature wall in a small room,may close the room in.