Stintino is a tourist seaside resort at the most northern point of Sardinia and is definitely worth visiting! In the north of Stintino you can find the most beautiful beaches of the island that remind you of the Carribean!
The best beach is near the isle Torre Pelosa and is called La Pelosa.

Tip: go to Stintino in low season!! Restaurants might still be closed by that time but nearly nobody is there - in summer you will see nothing but people.

There is bus connection from Porto Torres and Alghero but only a few times a day. In Porto Torres the tickets can be bought at the kiosk in front of the busstation where you can also find a little supermarket nearby.
Attention: if you go in low season it could be a bit difficult as the Italians barely speak any other foregin language...