Amazing vegan all you can eat buffet (even for meat eaters it’s delicious). 135 sek per person which also includes water, tea and coffee. They have a huge spread of hot and cold dishes. It’s a hippy vibe with communal tables and an amazing view of Stockholm. Get the metro to Slussen, and you’ll get a great little walk along the river before arriving. Then afterward head to the fotografiska museum which is excellent.