>>859188I've been there a couple of times with friends.
If you're thinking about going in the summer you should go in early or late summer to avoid mosqito season.
You should also aim your trip pretty far north to get away from normal civilization.
Otherwise Sweden is great because of their "allemansrätten" law, which makes it possible to sleep almost wherever you want in the nature.
Pic related: One of the many camps from the Sweden trips