Pick one side of the island
North and east Sardinia reward a route through Olbia, the Costa Smeralda and the Gulf of Orosei. The south gives you Cagliari, Chia and quieter inland food country.
Trying to do both in one week turns Sardinia into a sequence of long drives.
Plan fewer anchors
Choose two or three anchors: a boat day, one inland food or culture stop, and a stay that makes the journey itself enjoyable.
Leave the remaining days open for a beach you discover, a village lunch or a change in the weather.