I'm fairly good at these things. My guess is about 6' wide? Almost seems they converted what should have been a walk-in closet.
Standard building codes require at least 7' wide & 70sf to be considered a 'bedroom'. It's tough to believe this one is 7' wide.
@VictoriaLandis1 @Anouk If it’s in the U.S., don’t most places also require a bedroom to have a closet?