We stayed at Sanne and Natalie's beautiful apartment. It looks exeacty like the pictures and very clean and tidy. The area is really nice as it is outside of the main touristic center, but it is still very easy to get around to any of the other locations in the city (it takes abut 10 min. via U-Bahn+5 min. walk). There are a lot of bars and restaurants in the vicinity of the apartment but it's still quiet.
Sanne was very responsive to any question that we had and replied quickly and helpfully.
I'd gladly recommend to anyone to stay there :)