This seems to be one of those topics where women get pitted against each other, when the real fault lies with the appalling state of postnatal care. I come down on the side of "no partners overnight", if it's going to cause some women significant distress for privacy or modesty reasons, but there is nothing pathetic or inadequate about needing more support than the system currently provides. I was left lying in bloodstained sheets for days, I was denied painkillers for long periods of time because "we're too busy" and I was belittled or shouted at when I asked for help because I couldn't stand up or lift my baby out of the cot yet. I ended up falling asleep with her in bed with me by accident because I was so exhausted and ill, and then I got yelled at for putting her at risk. I'm confident that this all contributed to my subsequent postnatal anxiety and depression. When women are put through this shit, it's not surprising when they want someone there, even if, after weighing up everyone's interests, that request can't be granted.
Oh, and I'm a single mother. But that's just life - doesn't mean that married women are wrong for wanting their partners just because I don't have that option.