I worked in the travel industry for a very long time. Hotwire continues to be my favorite to book obscure hotel reservations. Their geographical limits are very clear and their star ratings strict. I always select 3.5 star and above. If you are the type that enjoys freebies like free breakfast and free shuttle your best bets will be 3 star properties. Finally anytime you are shopping for travel try to enter the specific portal via ebates. This ensures a little extra profit for you while keeping the same low prices.