Question: Where was the hotel at which Elisabeth Gürtler-Mauthner was a managing director located? 

Context paragraphs:
Udai Kumar: Mr. Udai Kumar is the Managing Director and CEO of the Metropolitan Stock Exchange of India Ltd (MSEI) since February 2016.  MSEI is India’s youngest and one of the three stock exchanges recognized by country’s securities market regulator - Securities and Exchange Board of India (SEBI).  Mr. Kumar served as Interim Chief Executive Officer and Interim Managing Director of Metropolitan Stock Exchange of India Ltd. from 10 October 2015 to February 2016.  He has also served as Managing Director of Metropolitan Clearing Corporation of India Ltd (MCCIL) (Formerly, MCX-SX Clearing Corporation Ltd (MCX-SXCCL).  He also serves as a Director of Metropolitan Stock Exchange of India Ltd.

John Lipsky: John Phillip Lipsky (born February 19, 1947 ) is an American economist.  He was the acting Managing Director of the International Monetary Fund from May to July 2011.  He assumed the post of Acting Managing Director after Dominique Strauss-Kahn was arrested in May 2011 accused of sexual assault.  After the appointment of Christine Lagarde he returned to his post as the First Deputy Managing Director of the IMF.  He retired from the IMF in November 2011 and is currently a Distinguished Visiting Scholar at Johns Hopkins School of Advanced International Studies (SAIS).

Elisabeth Gürtler: Elisabeth Gürtler-Mauthner (born May 7, 1950) is an Austrian businesswoman.  She is managing director of the Hotel Sacher, Vienna's most famous hotel.

Hotel Sacher: The Hotel Sacher is a five-star hotel located in the Innere Stadt first district of Vienna, Austria, vis-à-vis to the Vienna State Opera.  It is famous for the specialty of the house, the Sachertorte, a chocolate cake with apricot filling.  There is also an art gallery in the hotel with works from the 19th century.  The hotel is built near the former residence of Antonio Vivaldi.

Amanda Thompson (businesswoman): Amanda Jean Thompson OBE is a British businessperson who is the managing director of Blackpool Pleasure Beach, president of Stageworks Worldwide Productions, director of Big Blue Hotel and director of the Grand Theatre, Blackpool.  She rose to the position of managing director in 2004 after the death of her father, Geoffrey Thompson.  She was also managing director of Pleasureland Southport from 2004 until its closure in 2006.

Utility Stores Corporation: Utility Stores Corporation of Pakistan (USC or USCP) is a Pakistani State-owned enterprise that operates chain stores throughout the country that provide basic commodities to the general public at rates which are lower than the open market.  Utility Stores Corporation is governed by a Board of Directors and headed by a Managing Director.  The current Managing Director is Gulzar Hussain Shah, who took the charge of Managing Director USC on 30 March 2016.

Mangu Singh: Mangu Singh (born 15 December 1955) is managing director of Delhi Metro.  He took over as managing director after E. Sreedharan, the former managing director, retired from service on 31 December 2011.  He is an Indian Railways Service of Engineers (IRSE) officer of the 1981 batch.

Ashwani Lohani: Ashwani Lohani is IRSME officer, current Chairman of the Indian Railway Board and former Chairman & Managing Director of Air India.  Holds a Limca Record for having four "engineering degree equivalents" in Mechanical Engineering, Electrical Engineering, Metallurgical Engineering and Electronics & Telecommunication Engineering from Institution of Engineers, India; a place in the Guinness Book of World Records for successfully running the ‘Fairy Queen Express’, the world’s oldest working steam locomotive.  Also served as DRM, Delhi Division; Director, National Rail Museum; Chief Administrative Officer, Rail Alternate Fuels; Commissioner and Managing Director of Madhya Pradesh Tourism Development Corporation and Chairman & Managing Director India Tourism Development Corporation.

William J. Mulrow: Bill Mulrow (born January 26, 1956) is an American businessman, investment banker and government official.  He is a Senior Managing Director at the Blackstone Group, an alternative asset manager.  Previously, he was a Director of Global Capital Markets at Citigroup, Inc., a Managing Director of Paladin Capital Group, a Senior Vice President and Head of New Product Development at Gabelli Asset Management (now GAMCO Investors), a Managing Director in Corporate Finance for Rothschild Inc., and a Managing Director and Head of Public Finance Banking for Donaldson, Lufkin and Jenrette Securities Corporation.

Baron Hayter: Baron Hayter, of Chislehurst in the County of Kent, is a title in the Peerage of the United Kingdom.  It was created in 1927 for the businessman Sir George Chubb, 1st Baronet.  He had already been created a baronet of Newlands in the Baronetage of the United Kingdom in 1900.  Chubb was Chairman and Managing Director of the firm Chubb and Sons Lock and Safe Co Ltd, established by his grandfather Charles Chubb in the early 19th century.  "Hayter" was the maiden name of George Hayter Chubb's mother, and was selected in preference to "Chubb", as it was not considered appropriate for names of corporations to be attributed to members of the House of Lords.  He was succeeded by his son, the second baron.  He was Managing Director of Chubb and Sons Lock and Safe Co Ltd.  His son, the third baron, was Managing Director and Chairman of Chubb and Sons Lock and Safe Co Ltd and also served as Deputy Chairman of the House of Lords from 1981 to 1995.  s of 2014 the titles are held by the latter's son, the fourth baron, who succeeded in 2003.

Supporting paragraphs: Elisabeth Gürtler Hotel Sacher
Answer: Vienna, Austria