Yes. Single payer healthcare will not pay for all the extra niceties the American health consumer is used to. It will be a very rude awakening for some people.
Here's my real life experience: my domestic partner has had many surgeries in the US, in different hospitals. The family waiting rooms were all nice, freshly painted with new-appearing furniture and natural light. He always had a private room and television was included. Despite tight ratios, his nurses always responded promptly and the ancillary staff were attentive too.
My dad in Canada suffered severe burns in a farming accident. He did get a private room only because he was on isolation. The TV had to be paid for separately for him to watch it. The nurses were attentive (and always willing to update me on the phone) but were of course busy. When my dad asked the diet aide to open containers for him because of his burned hands, he was told "Ask them."
When he became septic, I rushed home and stayed with my mom in the ICU waiting room. It was dismal. It was on the 2nd floor and looked like a basement because there were no windows. The furniture was beat up. Old, institutional linoleum. The staff were kind and updated us frequently.
I don't doubt my dad received great care. But his overall hospital experience was very different from my boyfriend's.
My brother waited a year for shoulder surgery. My other brother, who also has shoulder problems, was not even put on the waiting list. He was told "It's not bad enough yet."
The care in Canada is good if you have an emergency. It's also good for non-emergencies, when your name comes up on the list. I don't believe anyone in my family has been asked to complete a Press-Ganey survey.