To begin with- We have stayed in shared flats, Hostels and family homes before. Never did we experience a bad stay like this one.
Marine's ad lacked accuracy: She does not stay in the flat herself, meaning there are 3 rooms, each rented out separately. Nowhere this is stated in the ad.
So by putting strangers together in a flat, you as a host are taking the risks of having guests with different perceptions on eg. hygiene and noise. Sadly, the guest in the room next to us seemed to have no idea on how to behave respectfully when sharing a flat. He came home at 10pm with a girl, was really noisy right from the start and even after asking him TWICE to be silent and respect people's sleep, they kept being loud. The consequence of this ignorant behaviour resulted in us falling asleep only at 3am. Considering that we had a long day before and a big travel day on the next day, this was a problem. On top of that, they were not cleaning after themselves, so bathrooms were dirty most of the time. It appears that Marine misses her responsibilities as a host. After sending messages and confronting her with the problems face to face, she seemed unmotivated and not very interested in solving anything. The apology appeared to be more helpless than genuine. The communication before arriving was fine. On the plus side were the free parking spots on the property, good Wifi as well as the possibility to do the laundry.
We were truly unlucky with the other people in the flat and felt disappointed how Marine did not take care of the situation. This can be a nice place if you have the luck to share the flat with respectful guests. However, in our case, this turned out to be a bad hostel type of stay with a host who does not seem to care about the satisfaction of her guests.