I stayed in the apartment for 3 months. The location is great, the park and lake close by, amazing, no need to comment. Of course you can hear trains as it is right next to a train station, but nothing too much disruptive.
The apartment shows its age but has all basics you need for humble living including a laundry room in the basement. The balcony is really an added benefit for the price, you can chill there and enjoy a partial view of the lake.
Chris is a good host, willing to help you with anything. Only sometimes I had to ask multiple times and some things stayed unresolved because I gave up trying.
The important is though that overall I was happy with my stay and would choose this place again.