The apartment was very nice and well located. However, during our stay we found out that there was a sound detector in the living room. This is a violation of privacy especially since the host did not warn us of the presence of this kind of device in the apartment. Furthermore, we had the feeling that is was trying to be hidden from us. Indeed, several times some of the agency’s employees said they were here to fix "wifi" issues while they were doing nothing more than checking the sound detector‘s proper functioning. It's a pity knowing that the apartment is really good.