Police said a relative found Eden after making several failed attempts to reach her.
The case is being treated as a suicide based on evidence and testimonies, police officials said. Greek investigators found pills at the scene and a coroner found bruises on her neck.
Greek police ordered an autopsy to determine the exact cause of death and are reviewing security camera footage and taking testimony from hotel staff.
Kan, Israel’s public broadcaster, said Eden had traveled to Greece to oversee the production of the hit spy thriller.
Some Greek outlets had suggested police were examining the possibility she was murdered by agents of the Iranian government, citing Tehran’s past criticism of the television series.
International production company Donna and Shula Productions said in a statement, “This is a moment of great sorrow for the family, friends, and colleagues.”
The company said rumors of a criminal or nationalistic motive were not true and urged media and the public to refrain from publishing unverified reports.