Planning a trip with my husband and two kids (3 and 6) to these three countries in August. Starting with a week in a kinderhotel just outside of Salzburg, then hope to drive down to Lake Bled in Slovenia for 4-5 days then down to Croatia. Anyone with advice on where to go in Northern Croatia? We just want to pick one place to stay in for the last week. Does this seem like a feasible trip? Thanks!