Via Margutta is a street in Rome, Italy, known for its art galleries and studios. It's been featured in several films, but none with that exact title.
If you're looking for actors and actresses who appeared in films set in Rome, or those featuring Via Margutta specifically, I need more information about the film you're interested in.
Please tell me:
* The specific title of the film you are referring to.
* The year it was released (if you know).
With this information, I can help you find the actors and actresses who appeared in it.