When it comes to booking a hotel, experts say the 130.000 worldwide properties available through Hotels.com are unmatched by Orbitz.com or any other site. This site also allows users to search by landmark or address. Hotels.com offers numerous filters to narrow down these properties to the ones with the price, location and hotel rating you seek. You can also consult hundreds of guest reviews and ratings for most properties. Should you find a lower price online within 24 hours of booking, Hotels.com will refund you the difference. Hotels.com doesn't charge an additional fee to make a change or even cancel a reservation, but the property may impose fees of its own, and you are still liable for those. Although Hotels.com features other types of travel searches, experts prefer Kayak.com, which also offers email alerts about price changes and mobile apps, for those.