This letter of guarantee data privacy applies specifically and exclusively to the service Delfim Douro Hotel. The Internet is a fabulous tool for communication. Each day we realize its growing importance in our lives, a simple mouse click on our computer and the world at your feet. People come together, the experiences are spread faster. The evolution of society is today rampant. For all these reasons and so everyone trust even more in this medium, it is important for the Delfim Douro Hotel that all users of its services and visitors of their pages have guarantees on the confidentiality of their data.