If you're overwhelmed with checking multiple booking sites to compare hotel prices, check out Scout by Room Key. Add it to your browser and while searching hotel deals, Scout sends an alert if a lower rate can be found.
You can also call the hotel directly and ask if it can do better that the rate you found online. You never know unless you ask. When you speak to hotel staff, ask if there are any other special promo rates. Sometimes there are, and they are typically not advertised.