Great place roughly 6-7 minutes walking from both Slussen and Mariatorget subway stations. The apartment is very small but pretty functional. Very convenient fridge. I think there is also some space for a microwave. Also I didn't consider the table as a good working space but on the other hand it's good for such a small apartment.
There is only one washing machine and one drier in the basement (for 15 apartments or something like that) but it seems almost nobody uses it because almost all the apartments are served as temporary accommodations (probably on Airbnb). So the whole building roughly works a hotel. But still it's pretty silent and cozy. Neighbours, who make the minority of residents also look pretty opened and friendly to the temporary visitors like us.
I liked this stay.