Holding Short:
There is a website for people moving to a few countries in northwestern Europe, i.e. Belgium, Netherlands, Germany...
and I don't remember where I discovered it, or if it is even up to date. People advertise for roommates, or how to find apartments in various cities. I wish that my wife and I had used it for a vacation or two.
The website might be dead, ganz kaput. Good luck.
"EXPATICA.COM"