I live in Alderley Edge (about four miles from the airport).
There are now two Premier Lodges (called North and South but next door to each other!) which are just at the edge of the airport - not walkable to terminals but only a short drive and they often do pretty good park'n'stay rates as well. You know what you're getting with a Premier Inn!
The Rad Blu is very convenient but you are a bit restricted as to where you can eat if you stay there unless you want to drive to Wilmslow or Didsbury or Cheadle etc.
For something a bit different, you could try here - it's just round the corner from my house and I've heard many good things
http://www.croftcorner.co.ukYou can walk into Wilmslow to eat in five minutes or so.
If anyone wants any restaurant recommendations or more quirky places to stay, please feel free to drop me a message.