Little big town
Stockholm shouldn´t be compared to skyscraper cities. It is the capital city but still smaller dimensioned. The different island districts all have different characters but everywhere you´ll see nice old architecture. It´s easy to travel all over Stockholm by subway or bus and actually quite cheap, as a 24-hour ticket costs about ~12€, 72 hours around 25€ available offering trains, subways and busses.
Insider Tip:If you visit Stockholm you should definately visit Gamla Stan, the historical part of Stockholm. Lots of beautiful coloured houses and architecture. If you want to go for a drink try Ayfur, a viking club in Väsdterlånggatan, opens at 17 o´clock. Also consider visiting Skansen, a historical open air museum and animal park. really nice!