I'll start with the good stuff:
The place was sparkling clean and had everything required for cooking etc.
I stayed with my 11 year old. In my taste it is not suitable for anything but a single person or couple. Since it's a devided apartment, the shower and the kitchen are in the same space, and the toilet are outside which I wasn't expecting at all!
Since it's actually a studio apartment and everything is in one space, and since there wasn't any ventilation in the kitchen, it made us sleep with the smell of cooking. Not very nice.
Other than that Martina was very sweet and the communication was good. She even let us leave our luggage later than check out time. Thank you for that!
Location is nice but a bit far from the center if you like to walk.
Public transportation was very convenient.
To me the toilet thing is accute . If I had known it was a shared toilet I wouldn't have taken the apartment. Maybe it's worth thinking about making it clearer in the description.