"Qualifying hotels will show offer on search results"


This means Expedia has hand selected expedia special rates where the $100 gift card would apply, it's not just 5 nights in general at the special rate.

Their very smart about making promotions where there's no chance of them losing money. They use tricky wording to make you think you can, then in their disclaimers make it evident they can do what they want.

In this case you can only expect to see that promotion apply on hotels where expedia makes the most profit, such as 4 and 5 star hotels.