One of the items on my bucket list is to have some sort of studio some day, although it’s unlikely to be as spacious or beautifully done up as these. Any little corner would probably do for me.
Rustic Home Office by San Francisco Interior Designers & Decorators Artistic Designs for Living, Tineke Triggs
This last one was actually built as a fish camp but I can easily see it being used as a studio. These images are from Houzz, Click on any image for the original, and to see additional shots.