Hello William,
First of all, thank you for sharing your place with us!
We enjoyed our stay in Sweden. Your place is bright, secure, smart locks work without issues, good water pressure in the bathroom, fast internet, convenient beds and storage places, well-equipped kitchen. So thanks for all of that. I am leaving you 5 stars. I think you already know all the good things about your place, so may I share with you and others what we didn’t like. Perhaps you would agree there is something you could improve on your end to make your apartment more usable and suitable for Airbnb community.
The first issue was when we arrived after a sunset, and it was pitch black and dark in the courtyard to navigate around and find the right door to the second building, without disturbing the neighbors. I couldn't find a switch to light the courtyard. Certainly, as soon as we got acquainted with the layout it was no longer an issue. But for us, being strangers in the night, it was challenging.

Then ascending and descending the staircase leading to the apartment is pretty energizing even without luggage. I think the it worse mentioning the really steep stairs in the listing. If it's already mentioned and I overlooked - my apologies.
Next, you say the curtains are not fully blocking the window, which is 100% true, but I feel like this can be easily mitigated by hanging larger curtains that can extend along the entire length of the rods. May be you could do a one-time investment in larger curtains and you would no longer need to say in your listing: "There are curtain blinds on the windows, but due to their height and shape don’t expect 100% light blockage." Because as of now, the curtains don't block anything, and light from the street basically illuminates both rooms that face the street.
One more thing I didn’t like was the lack of curtains on the windows facing the apartment building in front of the bathroom door and kitchen. I personally desired for more private experience getting in and out of the bathroom.
You also mention in the listing that Wi-Fi access could be spotty in some areas because it’s an old thick-brick building. At the same time I noticed that you use a mesh network with 2 devices. The main is located in the living room and another is hardwired to the security camera in the entrance hallway. So I assume the security camera has reliable internet access to allow you to video monitor your guests. Perhaps you could invest in 2 more access points and install those in both bedrooms so your guests don’t need to be physically in the living room to get online.
Finally, your listing reads: "There is an in-house restaurant and the personnel have access to the courtyard. They close at 23:00. Some guest have reported noise disturbance (the listing is therefore marked as “noise disturbed”)."
This description is a little deceptive as one can think the noise stops at 11PM... Our experience was that the noise doesn't stop at 11 PM, barely at 11:40PM-12AM, and we visited Stockholm on TUE and WED, so I can't imagine how late the noise stops on weekend nights. As for the morning, the noise also starts really early, like ~6AM (trash pickup, deliveries, etc), which was inconvenient. I think being more upfront and disclosing the real info about the noise level in the living room and one of the bedrooms will be fair to your guests
The JURA coffee machine with coffee beans and good toilet paper in the bathroom was a big plus though, so thank you for that!