HotelTonight's namesake feature is also holding it back: You can only book a room beginning at 9AM on the day of check-in. If you're planning to arrive during a major event, say, in Los Angeles during E3 or Rio during Carnival, landing without a confirmed room can add to the already stressful travel process. But the folks at HotelTonight have a good idea of whether or not you'll be able to find a room, and the team's now ready to share that info with you. Now, when you open up the iOS app, Look Ahead will let you preview room pricing and availability for the next seven days. The app will even give you a heads up if there's an event in town, so you can be aware of higher than normal rates, or opt to change your plans to avoid the crowds. Look Ahead is available today in Chicago, Dallas, Las Vegas, Los Angeles, Miami, New York, San Diego, San Francisco and Washington, DC. You'll need to have an iPhone to take advantage, but expect the feature to hit Android soon.