We've had a lovely holiday in Torre delle Stelle.
The house is roomy and airy, with a huge living room, which can surely accomodate a large group. The garden is the main highlight, however, as it's really huge and good for all kinds of activities: whether you want to lay down in a hammock, play sports or dine with your friends in the evening.
The area is very tranquil. The closer beach is really close to the house, as the description states, offering marvellous views on surrounding hills (especially at night). The other beach, being on the other side of the community, is even more majestic and takes only about 10 minutes of walking to get to it.
Francesco was very helpful and always ready to give us a hand, if we've had any questions.
One remark, which might get your stay to be more comfortable:
Take a car for the whole holiday. We've taken the car for the first few days and wanted to rely on regional buses later on (ARST) to move to Cagliari and back, but I wouldn't exactly call them reliable. You'll get by with them, but a car is definitely recommended (well, Francesco told us and he was right).
Also, the closest shop is quite small and expensive, while the other one, near the main beach, has wider array of products. If you're going for bigger shopping, you'd probably wanna go there.
Francesco, thank you for having us. We've had a wonderful time.