Another look at that map.

So if you look really close at this map that I put up in the last post, you can see that he drew on it. It's hard to spot because it's in mechanical pencil (he was an engineer, after all).

There's a little arrow on the Victoria Hotel and a line that goes up to the Central Station and then along the tram line, finally ending on Oostenberger Gracht.

A business meeting?