You still have access to all the same information and user-written reviews of hotels, attractions, and restaurants, but it feels a lot better doing this in a Metro style on a Metro styled device! Being a mobile application, geo location is used to find points of interest close to you, and it's really quick to read the user reviews of somewhere to help you make a snap decision.
I also like the ability to pin not just the application, but individual points of interest as live tiles for quick access while travelling. I could easily see myself pin a few places before I go out for the day while travelling.
The nicely improved TripAdvisor is available for free - find your copy on the AAWP App Directory.