I will be traveling with my husband and children (4 and 6 years old) for four weeks in July. We are flying in and out of Rome. We are spending our first four days in Rome, then 10 days in the southern half of Croatia and would like to spend 7-10 days in Austria before before returning the rental car in Croatia and heading back to Venice and Cinque Terre. I've been thinking about staying 5 nights in Vienna and then 2-4 elsewhere.
How many days would you recommend staying in Vienna? Would you recommend spending time in Salzburg and Hallstatt or Ljubljana and Lake Bled after Vienna? With the kids I want to make sure we have some down time built in, staying 2-4 nights per destination.