What's a studio?

In the back of my mind I've always wondered if  where I painted might be seen as unrefined or rather unprofessional. After having a conversation with a close friend and mentor of mine, makes his living as an artist about the environment an artist works in. More specifically whether or not it matters (in the art world) where the artists studio location may be. It might be in a loft or warehouse.
The end result is what's really important.

One may have a blazing hearth in one's soul and yet no one ever came to sit by it. Passers-by see only a wisp of smoke from the chimney and continue on their way.
-Vincent Van Gogh