Everything is so close in Europe that it is easy to jump into another country for a short trip or even lunch! We traveled from our house swap in Slovenia to the Istrian Peninsula of Croatia and fell in love with the country. The drive was very easy and no wait at the border or any problems taking Darwin in and out (this is out of Schengen zone so passports needed).
We stayed in a town called Rovinj which is an old fishing port. The streets are narrow and cobbled and quite steep in places leading up to the lovely old church of St Euphemia. We walked up one sunset and were lucky to see a Croatian wedding taking place complete with local musicians and dancing.
The beaches are pebbled and quite uncomfortable to sit on (locals sensibly had yoga mats) but the water is incredibly clear and blue. Gorgeous scenery.
The food was also amazing with great seafood, local sausages, olive oils, truffles (my favorite) and dare I say the pizzas and pastas rivalled if not beat out Italy.
The port area is filled with outdoor restaurants for boat and people watching and there are many places to stay within walking distance (important as limited parking). There are lots of boat trips offered as well but we ran out of time to talk any. Prices were very good for them.
Certainly a wonderful spot to visit.