Since we have been traveling a lot, I have been interested in how to book a hotel the best possible way. And by that I mean how to get the best room for the least money. Somehow it is often not possible to book directly in the hotel reservation system for a price as low as some booking sites can offer. I don't really know how this is possible as I would expect the hotel itself to be able to provide the best price; after all there is nobody else who should earn something from the booking. But no, often it pays off booking to big booking sites. This keeps on surprising me time after time.