One of the DLLs Notepad++ uses was compromised/customized by the CIA. Any apps that then use that DLL essentially allowed it to start up and do data collection in the background. The users were unaware it was happening, because all they saw running was Notepad++ rather than random_program.exe
AirBNB is only good if it is an extremely unique/convenient location and there are no hotels reasonably nearby. Otherwise Hotel absolutely > AirBNB