Excellent location. Literally in the middle of everything, walkable to all the major attractions. The host Aura did not show up during our stay, but she was super responsive and very accommodating throughout our stay.
Because our flight arrived at 10am, we arrived much earlier than the check-in time of 5pm at 12:45pm. Aura accommodated us and let us in which was a huge help.
The apartment is almost next door to the Royal Palace, the Nobel Prize Museum, the Storkyrkan and etc. All within 3 minutes walk max. Tons of restaurants and bars downstairs yet no issue of noise because it is tucked in a little alley.
The room is on the small side. Has a functional kitchen, although also on the small side. Aura prepared everything you would need! E.g. for making coffee, she provided a French Press and ground coffee (my favorite way), a coffee maker, and also instant coffee.
Overall, we thoroughly enjoyed our stay. I would recommend it for anyone who wants to stay in Gamla Stan.