We would like to do a “cottage” holiday in the US next summer: Fly to Seattle, rent a car and then spend 2 or 3 weeks exploring Washington, Oregon and maybe a bit of Canada.
We just need some pointers as we need to keep cost down. Trailfinders made us an amazing offer, but it was also amazingly out of our price range! 
What do I need to look for when I want the equivalent of a UK holiday cottage? Can you recommend any providers?