As far as I know, the short lived Venetian Dalmatia of Doge Orseolo was immediately abolished by Croatian kings which later(after Hungary strolled onto the Croatian throne) led to it becoming an integral part of the crown of saint Stephen...thus should be Hungarian.
After the civil war within Croatia and the subsequent defeat against Hungary and forming of a personal union, the king of Hungary, Coloman gained full control over the coastal cities in 1105, which lasted, regardless of several sporadic losses of individual cities/islands to the Byzantines and Venetians, until 1410-1436 when Venice finally managed to illegally occupy the coastal cities for good(and nobody could do anything about it since, you know; "the Turks are coming").
Heck, even the famed Venetian conquest of Zadar during the crusade only lasted 18 months before the citizens rebelled and the city returned to the "kingdom of Croatia"(only to be conquered again later, and rebel later...and then repeat...you get the point).
Is the Venetian holding of this province so important for gameplay?
Why not rather give Venice Crete since it did take absolute control of it merely a several decades after the start date?
This would be a much smaller deviation to historical accuracy and it would give Venice an island thus probably prolonging its lifespan if played by the AI.
Thoughts?