Please be wary of using this web site (ihsadvantage.com) for hotel reservations. They charge your credit card immediately and charge a cancellation fee equal to a one night stay, even if you realize you are on the wrong web site and try to cancel immediately. Also, if you realize that you are going to be charged whether or not you stay, and try to "un"cancel the reservation they "cannot" do it.
It is not illegal, but it is, also, not consumer friendly, nor helpful. They do not merit our business.
I recently booked a reservation through this website (it came up on my search engine for the area I was interested in). At the time I didn't notice the $4.99 site fee for booking through them (it was "buried" in the list of fees) and was surprised when I saw it on my cc statement. The thing that made me decide this site wasn't worth the visit much less the fee was that the hotel had no record of the the reservation. When I called trails.com to complain, the only response was they their website received an automated computer response from the hotel that the reservation had been received. There was no offer of a rebate of the fee. BUYER BEWARE - USE THIS SITE AT YOUR OWN RISK!