According to the documentation…
_To login to your Raspberry Pi running HASSbian you’re going to be using a ssh client. Depending on your platform there are several alternatives for doing this. Linux and Max OS generally have a ssh client installed. Windows users are recommended to download and install the ssh client Putty.
Connect to the Raspberry Pi over ssh. Default user name is pi and password is raspberry. Linux and Mac OS users execute the following command in a terminal._
… the password for the pi account should be raspberry. That is not working for me. Anyone have an idea what the password really is?