Some observations about the Danes and Copenhagen:
They are very polite to visitors. They speak incredibly good English, all of them it seemed to me. They are very "organized" and rule conscious, I rarely saw anyone jay walk. They ride a LOT of bikes, like I've never seen anywhere else. Copenhagen was very clean, relative to say Paris, and I saw maybe one person begging in nine days. Their food is "interesting", reasonably decent, not what I'd call great, same with local beers, though they have craft beer also. They still have a Queen who is around at times. One can walk right up to their Capitol building without seeing security. For that matter, security was pretty lax everywhere
A lot of streets are ped only (and bike) which works pretty well I thought. Traffic isn't that bad, everyone is on a bike, men in suits on bikes is common. The subway system is pretty comprehensive and is well used (semi-crowded). It takes a few times to really master it, for me anyway. There are no turnstyles. We were checked once for our tickets by some officer dude. The same was true with museums, you bought a ticket but no one checked it, same with a lot of stores, pretty light security. Hermes had a dude letting folks inside, this is common for them. I never had any sense of danger from anyone, it's not like Paris where theives are preying on tourists.
They have a lot of canals of course, some of which were originally defensive moats. The boat tour we took was quite nice and informative.
Denmark once was a power in Europe, but lost lands to Germany and Sweden, and got shellacked by the British Navy a few times, so today they lean pretty hard to staying out of wars. It's of course expensive, $200 a night for a decent hotel room was common, and it of course went up from there, but that isn't much different than here. Currency is "DKK" which is 14 cents per, making math a bit hard. Divide by 7.
Of cities in Europe I've spent some time in, it ranks pretty high. I liked Brussels, Lyon, and Barcelona roughly the same.