I had my son at North Manchester General in 2009.. Due again in Nov this year, if it's not a home birth (I haven't decided yet) then I'll have no issues going back to NMGH..
The midwives were lovely, the aftercare was fab, especially when it comes to breastfeeding etc, and the rooms are clean and nice..
They have been in the process of updating for some time now and they have a brand new antenatal area..
I never had any issues at all, even being put on a ward once my baby was born, I had no problems, it was really spacious and everyone had lots of room to move around etc, it was nice and quiet and had really friendly staff.. The only real problem I experienced there (which I have also experienced elsewhere) is that it took them ages to do the paperwork so we could be released.. We should have been allwoed to go at about 12.30pm, and ended up leaving at 4pm instead. However, if I compare this to other hospitals I've been in, it's nothing at all, just a minor gripe!
I don't know why you've been recommended to go elsewhere, from my experience it was topnotch - especially when I compare it to two other hospitals I've given birth in in Kent.