Your "Price Beat" image interferes with your form hover background color, also move it off to the right side a few more pixels so it's not in front of any of the form fields.
Is the "Save up to..." link supposed to actually do something other than go to top of page? (JavaScript error?)
At the bottom, the "About Us" section has very odd spacing. The Hotels can be slimmed up a bit, maybe "Hotels in..." instead of "Hotels", then just have the cities listed. Same with Taxis.
And for some fancy things, do a CSS Transition on the "Why Us" bullets 
