Hallo Potter,
i think the eating is good. Its not like in a 5 Star Resort but it fits very well. There is something for everyone. Breakfast is Continental and english(ham, eggs, sausagesetc) and other things. Dinner is good, but not as good as in the Restaurants in Funtana(and there are about 40 Restaurants and Bars in this nice Village). I can recommend this hotel very well, because of the beautifull land and seascape arround. THe hotel is clean and the staff is honest. You dont have to worry. Like i said the beach is stony, and there are rocks so you should take watershoes with you(you can also buy them near the hotel). There are ladders to go in the water and there are areas for the kids to(how to say kiesel in english? very small roundshaped stones) there should be no problem with kids to go in the water. If you go there drink a cold Pivo(Karlovacko- theres a supermarket at the entrance to the hotel) for me and watch the sunset at this very beautifull beach- its amazing).
Plitvice lakes are a bit to far from Istria to make it in one day i think. You should go to Porec(6 km), Vrsar(about 4 km), Rovinj Pula with the oldtown and the amphitheatre, you coul make a boattrip(boats go directly from the hotel), if you like seafood go to the Limskifjord(car, boat), also the old towns in the countryside of Istria are very beautiful like Motovun and Groznjan
To go to Vrsar, Porec, Rovinj or Pula you could take the bus wich is cheap and comfortable- it goes from the mainstreet of funtana(for some directions its better to go from Porec busport, but look wen you are there for yourselve.
nice greetings from Malin