Sardinia is a great place to spend your summer vacations. I went to the south part of Sardinia in a city call Cagliari. Event if I went there during the week with the pic of frequentation, surprisingly there were not so much tourist. I guess that can be explained by the less popularity of the south part of Sardinia. In Sardinia you can enjoy the beautiful dry nature landscape, the good temperature (about 35 °C average), the Italian food (amazing) and the kindness of local people. For hiker Sardinia is great because you have lot of hike for all tastes: mountain, flat, sea coast. The picture on the side is a picture of the Notteri beach located on the South East (goolgle maps link). It is special because the beach is stuck between the sea and a lake, as you can see on the side picture, you are surrounded by water. When you are done with the beach you can enjoy a hike to rich the lighthouse (where I took the picture).
Here all the pictures I took from Sardinia: