For future travelers:
The location of this place is good, and the neighborhood looks pretty safe. However, if you want to rent this place, there are several things you should know in advance:
1. The stairs are very narrow, so it's not a good idea to bring large suitcase with you.
2. You should take pictures for every corners in this place and try every furniture before you check-in and check-out as evdience so that after you leave, you can prove that you didn't damage anything; otherwise the host may request additional money from you even though she can not prove you did so.
3. When you do Step2, you should pay extra attention on the huge wallpaper: make sure you notice and take pictures of every small stains on that wallpaper because after you check-out, you need to prove that you didn't add any stain on that wallpaper; otherwise maybe the host will ask 200+ Euro from you to change the whole wallpaper.
If you can treat this place as an antique, it's a perfect place for you.