This web service is provided as a REST application.
You can find the documantation and the sample XMLs in the FTP area.
You need to request the following urls:
Search Available Hotels:
http://testxml.spidertt.com/Api/V1/HotelSearch
Add Basket:
http://testxml.spidertt.com/Api/V1/PreBook
Confirm Booking:
http://testxml.spidertt.com/Api/V1/MakeBook
Cancel Booking:
http://testxml.spidertt.com/Api/V1/Cancel
Booking Details:
http://testxml.spidertt.com/Api/V1/BookDetail