Cefalù is a very beautiful - though crowded during summer - town and the house is located uphill, in the heart of the old town. The small terrace is very pleasant, under the rock and a figue tree.
Although it is worth the effort given the great location, be advised that the house is hard to reach (don’t follow google maps as the street is marked at another place!) and requires a long walk uphill (many stairs) with the luggage because the car needs to be parked at at least half an hour. Parking itself is complicated and expensive in Cefalù. Don’t try to park in a free white spot as they are almost all reserved for residents (though not always clearly indicated as such) and the police checks regularly.
The house is tiny and was not very clean. The shower is very basic and half broken. The kitchen equipment is very basic too so don’t plan on doing much cooking.
The listing is managed by a private company that manges many houses. So don’t expect human relationships (no local tips etc.). Be advised that they will charge you an extra cost (20 or 40 euros) if you arrive later than 9pm - with no exception. You will be required to go to their office at the end of the town to sign a contract and pay the fees.
So though the location is really great, the comprehensive housing experience is not.