Whenever looking for hotels in an area I check the TripAdvisor reviews. I usually end up trying to call the hotel and booking directly, but recently TripAdvisor has been slowly rolling out pricing info directly on the hotel page from Expedia, Orbitz, etc. so I used that a few days ago when I booked a room for last night.

I believe this functionality has been completely rolled out in the mobile (iPhone/Android) app if you want to check it out.

(Disclosure: I work for TA, but in a different department. However, I was a TA user before I joined the company, and continue to be one)