Modern medicine, access to all the world's knowledge on a handheld device in your pocket, cheap clean/safe water and food from every corner of the world, entertainment (music/films/tv/youtube) cheap/safe transport over thousands of miles in a matter of hours.

There's not a chance in hell I'd want to swap places with a king of 1000 years ago.

You're just listing improvements to standards of living (that not all poor benefit from even today). Ancient kings still controlled land, armies, and food (they probably ate first in times of scarcity). They didn't have modern conveniences but they were still wealthier that today's poor. They also had power and most likely answered to no one.

They can mostly not worry about starvation, and have internet access, and they have some access to flush toilets and showers.

What are you talking about? Incan kings slept on stone shelves and covered themselves with poorly tanned animal pelts, and were at the mercy of insects and crop fluctuations. They didn't have modern sewage systems or vaccinations.

They have notoriously poor access to showers. http://www.mercurynews.com/2016/04/01/san-jose-approves-mobi...

Hence "some access".

A king 1000 years ago would have no conception of what a shower is. They would take baths, but even then, that'd be a seasonal/yearly thing.

Maybe Incan kings were just not very good. European cities had massive public baths right through the middle ages, "and private domestic baths... were hardly unknown to the Romans". https://books.google.com/books?id=KKrhJ9BbMkkC&lpg=PA63&ots=...

Life expectancy, longevity, and height are all much better than that of ancient kings.