This is a great film, suitable for all ages. Set in 1958, it's full of whimsy and curiousness as two eleven year old foster children make the trip to a sleepy Swedish village to spend the summer holidays with a klutzy old bachelor who is virtually the town pariah.
All the performances are spot on and it is a good complement to My Life as a Dog (1985 - how time flies) and perhaps, although this is a much grittier, meatier film, Cross My Heart and Hope to Die (1994) It is interesting to note that Brasse Brannstrom - who has a supporting role in A Summer Tale as Sven(what a wet title, by the way - what was wrong with The Best Summer?)is a Swedish comedian and actor now co-wrote My Life as a Dog.
The final scenes of the film may be somewhat belaboured, but this film is great family viewing - and the kids are alright!
As an afterthought - the DVD I saw had no special features (not even chapter index) but the subtitles were fine. It is available commercially but you'll have to do some research.