The place is lovely, clean and well lit, oriented towards the lake and the sea with a beautiful, beautiful view. Situated in a building from, probably, the '60s, it has a charming bohemian atmosphere, with a rounded staircase and a noticeable elevator. Located in the proximity of the train station, it allows you to reach the center really fast, as well as other places around Stockholm. The kitchen is equipped with everything, clean and functional, although quite small.
The whole studio is quite small, though, maybe a bit too small for a family with two older children (mine were 9 and 11 at the time). This, I guess, makes it not completely suitable for 4 adults; ideally, the guests would be no more than 3.
Communication with Elias was spot on, I can't complain about anything here.
Enjoy Stockholm!