New version of JavaHotel, taxation

Introduction
I uploaded new version of JavaHotel application. Demo version (U/P user/user) is available here, source code here.
Taxation
While issuing a document (receipt, bill) a taxation is calculated using tax level assigned to the service.

Detailed information related to the document is also available. This information if stored in the database (as XML file) for every document issued.
Taxation information is also exposed in "Stay summary" window providing information about the current status of the stay.

Next step 
Receptionist journal registering the information about user activity.