South Goa if you want a peaceful holiday. Some of the beaches are hard to find and require short hikes. But it's very beautiful. Also south Goa is a pretty general term for a very big area. So decide whether you are near Palolem, near Colva or near the wildlife sanctuaries. North Goa if you like parties, cafes and places that are immediately recognisable as Goa. North Goa is equally beautiful and full of hidden gems.