hi aubergenie - i had dd at newham in december. think you were on the thread when i shared my experiences here. it was crap, so won't go into all that again
just wanted to explain re the midwife unit - it is first come first served, so you will get a room if there's one available. i think they have 4 or 5, maybe even 6 rooms. one has a birthing pool, also first come first served.
you can only go to this unit if there is zero risk - i was not allowed because i had slightly raised blood pressure in labour only (had been fine throughout pregnancy).
it's worth booking yourself on one of their labour unit tours. they do one a month at least. check with your midwife. you'll see that the midwife unit is far nicer than any other bit of the labour ward, as it's much newer. there are no beds in the rooms, just sofas
they don't do epidurals in there, but will give you gas and air and pethidine
as it's attached to the main labour ward, you have the reassurance of knowing you can be moved quickly if there are any problems or you need monitoring or whatever
they have 2 wards for after the birth, which, for all their faults, are definitely not mixed. although they do have women in early labour in there, which doesn't help when it comes to getting any sleep!
re home births - they really are very short of midwives. can see why they are doing this, as i would have been annoyed if 2 widwives had had to attend a home birth leaving me with even less care at the hospital. it was minimal anyway. that said, of course it is annoying they are taking away choice from people, especially when the labour ward is so old and shoddy.
anyway, i wish you lots of luck for your delivery - i'm sure not everyone's experience is like mine. if you want to know anything else specific, let me know - am happy to share