The Qwensel House Café is located in the inner courtyard of the Pharmacy museum near the center of Turku. The museum is only open in the summer (from May to the end of August) and at Christmastime, but now is the best time to visit, I think.
The café is located in a 1700s house that survived the Great Fire of Turku in 1827, a rare occurrence for a wooden house of the time. Maybe the house's proximity to the River Aura had something to do with it? The house is named after Wilhelm Johan Qwensel, who bought the house in 1695 when he moved to Turku from Stockholm to work in the court of appeal.
The café serves homemade cakes, pies, and pastries along with coffee and tea.
I tried a savoury cheese-and-tomato pie this time, which turned out to be a good choice, although the sweet treats my friends had looked really good too.
Definitely a café to visit as much for the atmosphere as the food. I'm thinking it would be a great place to write some steampunk or historical fiction, but bringing a laptop here would be sacrilege; this is clearly notebook-and-pen territory. If you have the time, do check out the museum, too.