Atelier:
noun, plural at·el·iers [at-l-yeyz, at-l-yeyz; French atuh–lyey] /ˈæt lˌyeɪz, ˌæt lˈyeɪz; French atəˈlyeɪ/.
- a workshop or studio, especially of an artist, artisan, or designer. [Dictionary.com]
Noted in the movie McQueen (2018), wherein one of the tailors is noted to run an atelier.