We had a great time, and the apartment/location was perfect for our needs, except but we were a little put off by the audio/motion sensor technology that was found in the apartment. While I understand the purpose is to make sure you don't have additional guests or parties, I do not recall seeing this disclosure in the listing before we booked it. It felt intrusive, especially since I don't know the scope of information it gathers or shares with the host. Any disclosure, even after booking, would have been appreciated.
The temp in the apartment was extremely warm and very difficult to control. The radiator only blows hot and "less hot" air, and there wasn't a fan or any way to cool the apartment except to turn off the radiator and leave the windows open almost the entire time. The motion sensor device, according to the internet, is supposed to monitor temperature as well, but again, I don't know what the host does with this information.