Hi David
Yes, you can redirect /berlin to the page you would like.
Just go to the admin-> page urls page, and select the 'akzent hotel golden krone' page. Click on 'add a new url' and type in 'berlin' as the Url name. Set this to 301 redirect, and click on 'apply changes'.
Now, this will work for /berlin.aspx - but not /berlin. If you want it to also work for /berlin/ or /berlin, then you'll have to setup your IIS settings to run a 'wildcard' to map all extensions to the ASP.NET runtime.
The instructions on how to do this are in the 'install instructions' file in the instructions zip file.
-Bruce