I always book through bookings.com dont listen to negative reports I have never had a problem with this site ever, all I can say is brilliant love it and until I encounter any of these negative reports will continue to use them. They have brilliant deals on some hotels and some are really cheap you can get some really good discounts on this site.
I always use trip advisor as it helps me choose my holidays with out this site I would have had a lot of bad experiences but thanks to trip Advisor I have avoided a lot of bad hotels and holidays