Our family of 4 (2 teens) will spend 3 nights on Korcula Island in August 2019. I am looking for advice as to which town/village to base ourselves in. We will have a car for transport. I would like to base ourselves in a town/village that's not tourist/party central, but that has a few good reasonably priced restaurants to choose from, and is scenic. Any advice appreciated.
The old town on the far eastern side is really the best (only?) choice. It is very atmospheric for wandering around and food in Croatia is not expensive at all. You do not really need a car there, but it depends on the rest of your itinerary.
Yep, agree with Laurel. Korcula town is lovely and is the obvious choice. It's certainly the center of tourism on the island, but it's not "party central" (you may be thinking of Hvar, which actually is party central). The vibe in Korcula town is much nicer, more relaxed). Do note, it's a small town, and it is popular in high season (which is when you're going) so accommodations will fill up - book well in advance for the best options. No need for a car there (in fact, a car there, like any of the old cities, would be an inconvenience).
If you have a car, I would consider Lumbarda which is four or five miles from Korcula town.