Hamburg HafenCityAm Kaiserkai 1 20457 Hamburg +49 40 422369430 +49 40 422369435 hamburg@grprainer.com In Hamburg, GRP Rainer Lawyers can be found centrally located on Kaiserkai in HafenCity. Xing Linkedin Twitter Google+ Facebook JavaScript must be enabled in order for you to use Google Maps. However, it seems JavaScript is either disabled or not supported by your browser. To view Google Maps, enable JavaScript by changing your browser options, and then try again.