The Golden Violin restaurant was at 8917 Sunset Boulevard. From
jhgraham.com:
Little Hungary, also known as Little Gypsy, was open here by November 1937, featuring Hungarian food and the music of gypsy violins.
Though it changed names in 1960, the restaurant retained the same theme as The Golden Violin, owned by Rose Dietch. Dietch went a different direction in 1964, changing the name to The Galaxy, which it remained into 1969.
The article has a couple of photos of Little Hungary/Little Gypsy but none of the Golden Violin or The Galaxy.