HotelTonight has raised $37M in Series E funding led by Accel Partners and valued the San Francisco-based company at roughly $500 million. Other investors in the round include Battery Ventures, US Venture Partners, GGV Capital, Coatue Management and First Round Capital.

Launched in 2011, HotelTonight offers the world's best mobile apps for booking hotels. We make it remarkably easy to book great hotels at amazing last-minute rates on your mobile device, for tonight, tomorrow and next week. When hotels have unsold rooms, they load them onto the app, which means incredible deals. We screen every hotel featured, and only work with ones you'll love.