My letter didn't arrive... turns out the lady at the embassy had misspelled my address. However she called me to arrange for the interview the next day (today).
I arrived at 13h30 and was the in painlessly. (Half an hour later there was a queue at the door) After waiting, I was called to the window to hand over my documents, and another 30mins later the consul summoned me for the interview, which was just 5 minutes. He told me I could pick up the visa next week.
Easy sailing, friendly staff, I'm very very happy.