I was'nt going to post this but thought it could be very useful for others.
You need to do some work to find the right hotel cheaper,but these are the tools i used and have booked through Hotwire ( it's a USA site,but you get more for your £1.00)
1st Look at ibidlow instructions and compare with Hotwire,basically Hotwire does'nt tell you which hotels your booking until after you book,but ibidlow is the tool to use to find the name of hotel as i did.
I got a 5* hotel in Amsterdam, saving about 45% on the cheapest price out there.
Got comfirmation email fine and all has went through with no problems.
Will add a few other site that can also be helpful,but as I said only works if your willing to put in a wee bit of research/work.
Hope this helps someone out there.