Sodermalm was once the working class district and, similar to other areas of this type in big cities, it has undergone gentrification. It is now the hipster center of Stockholm and nicknamed SoFo. This seems to be the place to go for Sunday brunch with lots of cafes serving up dishes from pancakes to oysters, fresh juices and coffee. You can also browse in the mix of vintage and design shops. The area around Sodermalm theatre also offers great views across to the historic centre of Stockholm and the roller coasters of Grona Lund.
On the waterfront is Fotografiska, a renovated art nouveau industrial building with exhibition space over three floors. Check the website to find out what is showing. The top floor has a self service cafe with panoramic windows. The museum is open until 11pm every day of the week.