I personally think that the painting would go beautifully with a sofa like the one pictured. There are a lot of earth tones in the painting that will pick up in the tones of the sofa. I wouldn't go for a "flat" coloured sofa, instead go for something with a bit of texture like the Tobacco sofa you have pictured. Have your cushions reflect some of the colours in the painting but just be careful or it could end up looking busy. Judging by the pictures you have chose, it looks like you are on the right track. Hope this helps.

Lava stone bench is fantastic! You have great taste so I am sure you will make it all work. As with any room, maybe just consider which element you want to be the 'hero' ie. do you want people to notice the benchtop first, the rug? Then play up that feature and blend the rest into the background more. If you have too much going on colour or pattern-wise the different elements of the room will compete with each other and the room won't have it's focus. Love love your bar chairs as well!!! :-)

I did the same colour pallet as your describing on a new build. Black kitchen window frames, concrete floors and timber accents. Not quite finished yet but I'm happy. Must tell you that Laminex have just brought out a matt black that doesn't show fingerprints for your black kitchen cabinets. Basically I used concrete, accent colour was black, all walls and ceilings in Whisper white and then added timber. Hope this helps.

I can't even work any of that sorry . I assume the stone you have to have is that greyish larger square in the middle of both pictures ? Where is that going ? The vanity is the light powdery blue that is in one of the pics ? What are the floor tiles ? What else do you want ? Wall tile colour ? Shower tile colour ? Maybe thats where the grey tiles are going , or maybe its the floor ? At a guess , if the vanity is that powdery light blue then go with a stronger blue somewhere --- I quite like semi-see-thru blue glass tiles in small doses , maybe even some really strong blue almost violet tiles too , or if going modern , how about those tiles that are maybe 30mm tall , various lengths up to 250mm , in a strong blue but mixed with say black and even brushed stainless ( which I'm guessing is similar to nickel ? ) of the same size ( you can get them already made on a cottony backing ) with a white grout . But I may have it all wrong , and you may want white and grey and nickel and no real colour .