I hope someone out there knows the answer. We have been looking at hotels in central Amsterdam for a 3 day visit around December 14th this year. I have short listed six hotels, however nearly every one of them is showing no availability around that time. I am now wondering if there is something happening in Amsterdam at that time which would cause hotels to be fully booked so soon. Any ideas? Or is it just normal to be busy in December? Thanks for any input.