Google Glass already has a host of third-party apps, but Starwood is one of the first major brands to develop on the platform. Starwood’s app will let users search and book hotel rooms, view photos of the resorts and even get turn-by-turn directions to a location. Glass just closed their one-day public sale Tuesday, but with an estimated 10,000 Glass in use prior, Starwood can’t be reaching that large of an audience. They are likely making an investment in the future of Glass and getting some nice PR in the process.