I’m always surprised when people are late for their appointments in this day and age but it happens to me all the time!  It would seem glaringly obvious that you should write down the address or have it saved in your phone.  We are not listed on the directory in the lobby so as to avoid people walking in off the street.  This is a business choice and it saves us from spending time explaining to people we are appointment based only.  It’s amazing how many people show up in the building and rely on the directory for the suite #, and then start calling our switchboard in a panic because they are now late for their interview.