We loved our stay in Castellammare del Golfo. Apartment is located on a quite street, right near historical center with all the things you can reach out by walking.
Flat has everything you need for a couple of days or even more. We appreciated kitchen appliances, coffee machine and TV with Netflix. And if you have a car - city is a great place to start exploring other parts of Western Sicily.
Hosts are very kind people, who provided clear instructions on everything and were really responsive for our messages.