The host thinks she can enter the house without any prior notice or permission anytime she thinks it is an emergency. In my case, this emergency was that I turned on the heater 10 degrees higher than it was as it was freezing in the flat. The host entered the house to put it back to what it was without my permission while I was away. Other than this rude behavior and being in a noisy street in the night, things were OK. The flat has a central location and quite big for 1-2 people.