For your time near Plitvice Lakes, I’d highly recommend looking into eco-lodges or family-run guesthouses in the nearby village of Rastovača or even further out toward Korana or Grabovac. These areas offer great access to the park (especially helpful for early morning visits before the crowds), and many lodgings are built with sustainability in mind.
When it comes to the coast, you’ll find lots of charming Istrian towns to base yourselves. Rovinj is a popular and a great spot, but for something a bit quieter and more relaxed, consider places like Vrsar, Bale, or even Motovun if you don’t mind being a short drive from the sea. These make great bases for exploring Istria’s vineyards, olive groves, and coastline.
As for transportation — yes, you can rent a car from Zagreb, and many travelers do. But if you’d rather avoid the stress of driving unfamiliar roads, finding parking in small towns, or dealing with tight timing, a private transfer service can make a world of difference. You can stop anywhere you want, linger in a park or at a scenic overlook, and never worry about directions or schedules.
If that sounds appealing, consider reaching out to Ivan Ćosić (MC-Travel Croatia) on Facebook. He’s a professional driver with a new/comfortable van, and offers exactly the kind of flexible, friendly service that makes exploring Croatia so easy.
Wishing you great trip and if you go the private driver route, Ivan does a great job!