Siewer Weizsäcker Rechtsanwälte Partnerschaftsgesellschaft mbB Potsdamer Str. 86 10785 Berlin GERMANY The entrance is located at Lützowstraße/corner of Postdamer Straße. Phone: +49 (30) 21 96 59 34 (Office hours: Monday to Friday, 10:00 to 13:00) Email: For citizenship matters: citizenship@siewer.net For all other matters: info@siewer.net