Kristina - I can't think of hotels in Chorlton either - it's a lovely place - we go quite regularly 'cos there's a fab organic supermarket (and a Woolies!), but no hotels that I know.
I can recommend a Travelodge at Parrs Wood - might be listed under Didsbury (I'll see if I can find the number). We stayed in it when we came up to get spermed (as it were) - the rooms aren't a bad size and they provided us with a travel cot for ds1 and did a good buffet type breakfast the next day. It's probably about a 15 minute drive to Chorlton, just down Kingsway (big road!).
There's also a either a Travel Inn or Travelodge in the middle of Stockport, which was lovely and also child friendly. It would be about a 20 minute drive from Chorlton.
The airport's not too far away from Chorlton though - probably about 20 minutes by car aswell!
V. tired today - ds2 screamed (and I mean screamed) for 1 1/2 hours last night - we were determined not to give him his dummy and get him to settle himself. Went in every 10 - 15 minutes but he just screamed and screamed. But then fell asleep until 7am, so didn't have a feed at all...
We'll probably persevere through the next few nights - was horrible though and makes me feel like the worst mummy in the world