For a description on how to use it check out
The Android app for customers.
The C# client for employees.
The web service. Automatically creates the tables when running the Login method.
The server also creates some seed hotels, here is what it looks like:
hid name adr 1 Hotel 1 Hotel Straße Nr. 1 2 Hotel 2 Hotel Straße Nr. 2 3 Hotel 3 Hotel Straße Nr. 3