Nice to meet you Tobias and welcome to Sweden this summer!
Some places worth visiting during your stay:
A beautiful bouldering area about an hour north of Gothenburg. Close to the sea. See: Teds arete, Animal and GBO for more info.
Hönö / Öckerö, Gothenburg
Two islands on the coast just outside Gothenburg. Beautiful setting. See: Lamborghini, Hönö, GBO Hönö, GBO Öckerö.
Fore more info contact the climbing shop Fjällsport in Gothenburg. They have guide books and loads of info.
Bonus video to get the feeling 🙂