There is no lock for any room, not bedroom, not toilet either.
The hostess raises a big dog and him as her lock, she puts a paper in the door, DOG, DON'T OPEN.
You may enjoy your stay with her if you:
1. dont mind the male dog smell that feels like unwashed smelly feet day in and day out;
2. dont need a hot shower longer than 5 minutes;
3. you are a very quiet person that whispers before 8am and after 10 pm.
And no, her neighbours dont like her guests and cant not bear her to use her flat as a hostel.