Quattro, I have had the same operation twice at the same hospital - once privately, once on the NHS.
In one instance, my bed had one really very dirty pillow, I was told there were no more and shrugged at when I asked for the case to be changed at least.
There was chewing gum all over the floor.
The staff in the recovery room were playing solitaire on the computer while I shivered so hard I nearly fell out of bed.
I had the drip almost wrenched out of my arm when they brought the bed back up because they were so careless.
I was taken to the toilet and left there, the first time I'd got up post-op, when the nurse knew I had very low blood pressure and I had told her how faint I felt.
My food was brought to me in a cracked bowl - so cracked it had leaked all over the tray. No apology, no replacement.
Never saw a cleaner.
One word summed up the medical staff I encountered that time - surly.
The other experience, I had friendly, attentive, kind nurses, clean pillows, clean floor, which was cleaned regularly when I was in hospital, recovery room staff who offered me sips of water and lip balm and explained why my nose was itching like mad (morphine, apparently!).
I realise you've probably guessed which way round these experiences are, but is this what you'd expect?
The NHS has its faults, oh, yes, and some shocking staff. But there are also many good, kind, decent people working against mad budgets and ridiculous funding decisions.