The phrase "art bar" is correct and usable in written English.
It can be used to refer to a venue or space where art is created, displayed, or appreciated, often in a casual or social setting.
Example: "The new art bar downtown offers a unique experience where patrons can enjoy drinks while participating in painting classes."
Alternatives: "art lounge" or "creative bar".
And now Lou Reed is dead / And I'm sitting in the Art Bar in Milwaukee".
Along with Cochran, Banksy has also raised the street art bar with his new interactive piece opposite the French embassy.
The captions are: Entrepreneurs, Denizens, Hanging Out, Art Bar, La Vie de Boheme, Divertissement, Curator, Bus Tour, Fashion Shoot.
— Glenn Collins The New York Times: Max Fish, the celebated art bar in the East Village, is moving across the river, to Williamsburg, Brooklyn.
Art Bar, Fri SM As one of the UK's foremost experts on world music, Gilles Peterson is best loved these days for his contemporary but cosy Saturday afternoon 6Music show.
The larger Ballroom is home to a variety of events — concerts, performance-art shows and private parties — while the smallest, the Art Bar, is used for other creative events, including life-drawing classes on Wednesdays.
"May Day – Everything Stops!" warns the graffiti scrawled in the lavatories in art bars.
He usually worked the 4 P.M.-to-midnight shift, and then hit the downtown New York art bars.
Thus began her all-hours reconnaissance of artist studios, art fairs and art bars — any place artists gather.
Another factor was a certain disdain for German Neo-Expressionist painters, whose international success had given Cologne a lively critical mass of galleries, artist-run spaces and art bars, creating a useful arena for conscientious objection or just acting out.
Pooh and I frequented art gallery openings, patronized art bars, and went to parties in artists' lofts.
