I'm in Norway. While the sun technically goes down, it just goes barely below the horizon so we just have a few hours of civil twilight and if there are a few clouds, a sunset that lasts for hours until the sun comes back up. I can read outside so long as it isn't too cloudy - and barely need light to do so if it is.
It is pretty glorious, though some folks do need to darken their bedroom to sleep well - especially immigrants.
Immigrant in Norway. Can confirm. First few years were tough, but now I don't even bother with curtains. Summers here are the best (provided the weather isn't awful).
I was kind of lucky myself - I worked nights and was used to sleeping when light outside. And you are right - summers are pretty wonderful, though I like it when the summers are cool.
After 7 years here, I still don't recommend swimming in a pond on a mountaintop. The water is still cold.
It is pretty glorious, though some folks do need to darken their bedroom to sleep well - especially immigrants.