Overall, it was okay. The location was bittersweet. It was great and central for walking anywhere in the city. There were tons of restaurants, shops, and grocery stores all within 5-10 minutes walk.
The major downside however is that the apartment is right above some bars and a pretty active street. All. Night. Long (even on weekdays). The noise level in the front bedroom was not tolerable and the member of our family that slept there would have been better off bringing ear plugs to get any sleep at night.
The noise level in the back two bedrooms was ok, but every morning from 5-7am folks would be bringing their garbage bins into the courtyard and it sounded like thunder or a freight train rolling by (no idea why those waste containers were making so much noise, but they were). Kids in the smaller bedroom would wake up scared thinking that some giant thunder cloud was right in their room.
The check in process was a breeze, with a self service lockbox nearby that you get instructions for, so late check ins are not a problem. The apartment was nice and clean upon our arrival and it is very spacious and nice looking.
Keep in mind that the building is old, and the neighbors will hear you if you have heavy feet, or have kids that like to be kids. This also applies to hearing footsteps from the floor above as well. Bring slippers.
The final issue we had was that apparently the district heating was somehow limited, so the apartment rarely got above 18-19 degrees, and was down below 18 degrees about half the time. Had we been informed of this prior to arrival it would not have been that big of a deal as we could have packed extra warm clothes for lounging in the apartment, but had to make due with what we had for outdoor sweaters. I'm not opposed to conserving energy (especially these days!), but when it's out of my control I just want to know about it in advance so I can plan accordingly.
Communication with the host was ... delayed a bit, but in general, responsive.
Overall it was an okay stay, but I don't plan on returning to this apartment, but I might recommend it to someone with full disclosure about bringing earplugs and extra sweaters.