French engineering student looking for an accommodation in Stockholm during summer 2021

I am a french engineering student, and I will spend the summer 2021 in Stockholm for an internship at the university. 

I am looking for a studio / a room in a shared appartment, with a double bed, as my girlfriend might join me during the holydays.

I study computer sciences in Strasbourg, at Télécom Physique Strasbourg, en engineering school. My english level is pretty good, I am passionated about photography, pets and nature, so I plan to travel as much as I can, on weekends, to discover the beautiful Sweden.