How to Get to Stockholm?

The sun goes down in stockholm but not too long, so you will have very few hours of sleep if you want to enjoy them most. Of course, when we're talking summer, are also talking about the really long days then in sw Sweden. So it's completely a different area. And where would we start, and what kind of itinerary would you paint for us? I would start from the airport, which is probably where most people go to stockholm.