If you plan to book hotels or B&Bs recommended in Rick's guidebook, you should book directly. The rates he quotes are for rooms booked directly. When you book through a website other than the one Rick lists for the hotel or B&B, they must pay a commission on the booking and will likely charge you a higher nightly rate. Note that very few of Rick's recommended hotels are "branded" hotels. Rather, they tend to be smaller family-run hotels. If you prefer to rent apartments, then the websites mentioned might be the way to go. Some apartments can be rented by the night, while others will require weekly rentals. www.venere.com is another good website if going the apartment route.