Never believe Booking.com for their Best Price Guarantee they are NEVER the best price! I foolishly was duped into believing that they backed their best price guarantee but was very wrong! After I booked with them a friend let me know that hotels.com had much cheaper rates.
I called them right away to ask about their Best Price Guarantee and they said that it wasnt a valid claim! Same hotel, same dates, same room level. all within hours!
Booking.com said it wasnt a valid claim because they have a No cancellations & Modifications rule and hotels.com allows you to cancel right up until the day before travel. Different cancellation policies means the Best Price Guarantee is invalid! So basically Booking.com has WORSE prices & a WORSE cancellation policies. There is basically no reason whatsoever to book with them! Please save yourself the headache and TERRIBLE customer service and book through expedia or hotels.com. I have deleted my Bookings.com app and will never use their pitiful, deceitful and misleading service ever again!