I was planning a X-mas vacation recently and stumbled upon a brand new family travel site that offers personalized travel recommendations based on family demographics (number of children, ages of children, etc.). It's called MiniTime.com. I was able to find a really cheap hotel that featured all of the amenities that I need for my 3 year-old - and the site is really easy to use. I was able to basically plan my entire vacation using their site - they feature a large database of kid-friendly attractions and things to do. I highly recommend this site.