I booked a hotel stay via jetsetter.com and got a jetsetter confirmation number soon after payment. I was told the hotel will send me their own confirmation in a couple of days. Two weeks passed but I received nothing. I contacted the hotel directly and they said my reservation was not in their system at all. I went back to jetsetter and while their replies are polite and congenial, they are basically useless. I had to contact the Front Office Manager of the hotel about the issue and they sorted it out with jetsetter directly and had my reservation confirmed. If not for the FOM who went out of his way to help me, I would have probably reached my international destination room-less.
I was fortunate my chosen hotel was a Kimpton, whose customer service is legendary. I will use Kimpton again but jetsetter.com? Probably not.