I am traveling to Berlin in March 2016 for business at the Messe Berlin. The trip will be a combination of business and pleasure. I would appreciate recommendations and detail on both the Berlin Ritz Carlton and the Autograph Collection Hotel am Steinplatz? - I love the amenities of the Club Level at the Ritz, but the Autograph hotel appears in an ideal location. Will appreciate any insight or details about the two properties. Thank you!