What to focus on
Croatia is not only about the coast. Dubrovnik, Split, and Plitvice already show why the country works so well when old towns, water, and one inland park all appear in the same trip.
Route logic
Six to eight days is the safest first structure: two nights in Dubrovnik, two nights in Split, and one night around Plitvice, with Hvar or Istria added only if the pacing still holds. If time is tight, keep either the south or the center instead of forcing a full sweep.
Planning watchouts
Do not assume the coast will feel easy just because the map looks linear. Ferry timing, summer congestion, and where you enter each old town matter more than the total number of stops.
Dubrovnik Old Town
Dubrovnik's real value is the full composition of walls and sea, so it works best with an overnight that lets you see the city outside midday crowd hours.
Split Old Town
Split is an excellent mid-route hub because the old town, port, and island logistics all come together, making it more useful than a simple sightseeing stop.
Plitvice Lakes
Plitvice is not only about water color. The real planning variables are trail flow and entry timing, and an early arrival makes a major difference.
Hvar Town
Hvar works well as a softer coastal segment, where evening harbor atmosphere, ferry timing, and whether to overnight on the island are the real decisions.
Rovinj
If you have extra time, Istria keeps Croatia from feeling limited to Dalmatia, and Rovinj is often the easiest town to slow down in.