I love the sound of Croatia, but a beach hol is probably a must. If we go in April, is it going to be too cold? I've also heard that there are only a few sandy beaches & with a 5 yr old & 3 yr old they probably would be a requirement. It looks a spectacular country, but we'd hope to avoid hiring a car and therefore would need a good base to access the beach & other places of interest. Can anyone recommend where we should go, please, or gently dissuade us if it's not a great idea.