The goal for the coming years is to get insight in the guest experience in hotels. What is guest experience? How to measure guest experience? What is the relation between guest experience and guest loyalty? And finally, what tangible elements in the physical environment of hotels and the contact with hotel employees may improve the experience of hotel guests? And in what way should these elements be changed? This paper describes the first and second step towards this goal: a theoretical background of guest experience and the development of the Guest Experience Scan for NH Hoteles. This Guest Experience Scan is a quantitative instrument trying to measure guests’ affective evaluation of the physical environment of the hotel and the contact with the hotel employees.