What actors and actresses appeared in Romanze Venedig - 1962?

You're likely thinking of the 1962 film "Romanze in Venedig" (Romance in Venice). It's a German-Italian film that featured:

* Curd Jürgens as Count Carlo Visconti

* Alina Taldykina as Nina

* Carlos Thompson as Dr. Max Miller

* Karin Dor as Marta

* Heinz Reincke as Professor von Aschenbach

* Helmut Griem as Stefan

* Vittorio Gassman as The Count

* Lea Massari as The Countess

The film was directed by Harald Reinl. It's a romantic drama set in Venice, with themes of love, betrayal, and art.