Victor Harbour is a great place to go to. It has a very pretty and serene vibe. They have this carnival type thing there yearly (I'm not sure when it is though) I suggest that if you have kids, take them in hot weather or when the carnival is on.
Also there's granite island that you can literally walk to because it's connected to victor harbour by a long jetty. If you don't like walking then have no fear as you can always take the horse and carriage. At Victor Harbour there's a mini put put course thing which is great for the kids and there's also a souvenir shop for travellers.
There's plenty of food there and shops on the main street you can gaze at. The parks are pretty cool as well. There's a caravan park and also a country club people can stay at.
All in all, come here if you want to get away from city life as it's a very beautiful place. People may suggest Victor Harbours older brother Goolwa but honestly, Goolwa isn't as great as Victor Harbour!
Make sure to definitely have a look at Granite Island if you're only coming here once read more