We had a great stay at Alan & Kasia's place. The apartment was the right size for our group of four, right near a tram stop, and a few minutes walk from a good grocery store. The apartment was well equipped with cookware, spices, towels, blankets, etc, and it was handy having the washing machine there to do laundry. We had no trouble with the noise rules, but there are loads of families with children in the building and the noise carries, so it makes sense those are in place.
Keep in mind that the apartment is not super close to tourist attractions like museum island, so there's a bit of train/tram transfers required. But in exchange you get to be in a quiet residential neighborhood, so in that way it's great for families.
Thank you Alan & Kasia!