This is a perfect villa for a large group easily cope with 12 people, the 6 of us had separate bedrooms sharing 4 bathrooms.
The pool is lovely.
Do not assume any public transport though the supermarket will deliver and if all you want to do is laze by the pool this villa is perfect even without a car.
If your flight lands at a rational time I would hire a car at the airport but the host was helpful for us and found an inexpensive mini van for our group.
A note on driving in Sicily particularly Palermo having an older hire car is MUCH less stressful.
Thanks again for a really restful two weeks.