The key was organised and the building surveyed.
All we have to do is to drill holes in two walls. The outside wall of our building, because when you're on the roof of our neighbor building, you are looking at exactly that wall :) Our building is one story higher. And then, once you've run the cable through the half of the building you've got to drill through the plaster-board wall, that was errected, when we moved in. That's it.
We'll just wait for them to do the job now. Might take a couple of weeks, but there's no immidiate rush.