I haven’t been to Stockholm itself, but visited Sweden several times.
Nice things about Sweden:
Basically everyone under, maybe, 60 or so speaks English very well
Nature is impressive – go on a coastal hike if you can
There are “Quiet” compartments on trains. They take these seriously
It’s a pretty clean country, even in the cities
Saunas are amazing. Visit one if you get a chance. Be aware that it’s the norm to be naked in a Swedish sauna, though you can probably get away with wrapping yourself in a towel
Foods to try:
Meat lovers will say meatballs (Köttbullar). I say Quorn “Meatballs”
Pickled herring is a staple
Real, salty licorice
Daim, if that’s not available in your home region
Crispbread
Cakes to try (the quantity of recommendations here is proof that I like cake, but also that Sweden makes good cakes!):
Kladdkaka, a chocolate cake that tastes like a perfect brownie
Mandeltårta, a.k.a. Almond Cake (the chocolate one, skip the white version)
Kanelbullar (the original Cinnamon Rolls. Expect less sugar.)
Princess Cake (Prinsesstårta), a green, cream-filled marzipan cake that’s somehow light and fluffy
All the pastries, but especially the Maple Pecan Plaits. Nomnomnom.
Two things I didn’t love:
There’s cardamom in some pastries. I don’t mind that so much now, but it was unexpected when I first encountered it
Sweden is expensive
Things to know:
Take some good mosquito and tick repellant. Ticks might carry FSME. Ask your doctor about the vaccination.
The average Swedish person will be much more reserved than the average American. Don’t take it personally when people are slow to warm up. It’s not you, it’s just a different culture
Dinner menus are expensive, but many restaurants have a lunch menu that’s more affordable
Fika is Swedish for taking a break from work with a warm beverage while chatting with a friend or just being quiet. It’s a good concept to keep in mind and a reflection of Swedish culture. If someone invites you to their Fika, say yes