HDU was fine! Getting transferred to postnatal at midnight was a shock. I hadn't stood for over 48 hours, and before the long labour, EMCS and complications I'd barely been able to stand because of SPD.
Noisy, bright, hot. Beds near impossible to get on/off. Skimpy portions of food that have about 50% of a postnatal calorie requirement. No food overnight from 5pm to 8am (my stomach thought my throat had been cut by 9pm, crappy sandwich long forgotten). No point in pressing buzzer. Dropped DS on his head when my strength gave out as I tried to put him in the crib. No idea what I should do with baby when I went for a shower. Wasn't told that I had to do more walking than I'd done in the previous month to go and get breakfast.
There was a significant difference on the 1:14 ratio at the start of the stay and the 1:8 at the end. The same staff were so much nicer because they actually had a little time to be human.
I was terrified at going home as I felt so weak and shit, but it was so much better.
Was told that we couldn't borrow a wheelchair to get from the ward to the car as it meant I wasn't well enough to go home. I hadn't gone that far in months! My god it was a long, painful shuffle.
Had an unnecessary prenatal stay just before DS2. It became obvious that it was a false labour (VBAC) but they wouldn't let me go. Had a long night shuffling around on crutches because there weren't any pillows to bolster my SPD ridden body so I could rest. Admitted at breakfast time. Was refused lunch "just in case" despite contractions fading off. Had to ask for tea-
pointing out that labour clearly wasn't happening and just got a minging sandwich with inedible bread, so in 24 hours basically ate a handful of cheese 
I've not had any other reason to be an inpatient to be able to make comparisons.