The host use the spare key to get in guest’s room when the guest is not there without any asking.
You cannot close your curtain and window even everyone can see your room clearly through the window of the room. Because she does not like it. I asked her ‘please do not to come in my room without asking’ but she refused and said this is her house and she had to get in using the spare key because my room with closing curtain and window looked horrible. I couldn’t stay there anylonger I had to move to another hotel. Such an uncomfortable experience. The unkind host I’ve ever met..
Actually the room was clean and nice. but looked different. It’s not the same structure.