2024-10-18 00:00:00 The protel Air Housekeeping app is now available free of charge! Please note that concurrent use of protel Air is a requirement for using the app. A protel Air license code is required for full usage. For further information please contact our protel Support Team or your protel Support Partner . For everyone already managing their hotel with protel Air: Use the app as an optional add-on to your protel hotel software. The app links the housekeeping staff, maintenance teams and front desk managers, allowing them to share live information on housekeeping and maintenance issues.