A studio is a room or space where an artist either teaches classes or does their work. If you make pottery, you might dream of one day having a studio in your back yard.
A studio is an artist's dedicated space for making art, whether they're a painter, photographer, or even a writer. Films are made in another type of studio, a facility for producing movies (and studio is also frequently used to mean the business entity that produces a movie). Musicians work in studios too, spaces specially designed for recording music. There's also a studio apartment, a one-room living space.