Question: What German word is used to describe the decorating style of the Museum David and Alice van Buuren?

Context articles: Museum David and Alice van Buuren
Mosey van Buuren
Sunny Days (Armin van Buuren song)
In and Out of Love (Armin van Buuren song)
Benno de Goeij
Another You (Armin van Buuren song)
This Is What It Feels Like
Richard Bedford
Not Giving Up on Love
Gesamtkunstwerk

The Museum David and Alice van Buuren is a private house built from 1924 to 1928 for banker and art collector David van Buuren and his wife Alice in Brussels, Belgium.
 The house was decorated by David and Alice as a "total work of art" to present their art collection in a rich Art Deco interior.
 The house is surrounded by gardens designed by Jules Buyssens in 1925 and René Pechère in 1968 and 1970.
 The house was declared a National Heritage site in 2001.
 The private house became a museum in 1975 according to the testament of Alice van Buuren.
Mauritz Christiaan Willem Egmond "Mosey" van Buuren (12 August 1865 – 3 October 1950) was a South African international rugby union player who played as a wing.
 Born in Burgersdorp, he attended Diocesan College before playing provincial rugby for Western Province.
 He made his only international appearance for South Africa in their first ever Test—against Great Britain at the Crusader's Ground, Port Elizabeth.
 van Buuren died in 1950, in Bedfordview, at the age of 85.
"Sunny Days" is a song by Dutch DJ and record producer Armin van Buuren.
 It features the vocals from American singer-songwriter Josh Cumbee.
 The song was released in the Netherlands by Armada Music as a digital download on 16 June 2017.
 The song was written by Armin van Buuren, Benno de Goeij, Afshin Salmani, Josh Cumbee, Toby Gad and Gordon Groothedde, and it was produced by van Buuren, Salmani, Cumbee, and Gad.
"In and Out of Love" is a collaboration between Dutch DJ and record producer Armin van Buuren and Dutch singer Sharon den Adel (Within Temptation).
 It was released on 6 August 2008 as the third single from van Buuren's third studio album, "Imagine".
Marinus Bernardus de Goeij, known as Benno de Goeij (] ; born on 19 March 1975) is a Dutch record producer.
 He is perhaps best known for his participation in Rank 1 with Piet Bervoets, Kamaya Painters with Tiësto and Gaia with Armin van Buuren.
 Since 2008 de Goeij has been known as the co-producer behind the Dutch trance acts Armin van Buuren and Jochen Miller.
"Another You" is a song by Dutch DJ and record producer Armin van Buuren.
 It features the vocals from Dutch singer Mr Probz.
 The song was released on 8 May 2015 by Armada Music, as the first single from Armin van Buuren's sixth studio album, "Embrace".
 "Another You" became both Armin van Buuren and Mr. Probz's fourth top 10 hit on the Single Top 100 chart in the Netherlands.
"This Is What It Feels Like" is a song by Dutch DJ and record producer Armin van Buuren.
 It features the vocals from Canadian singer and songwriter Trevor Guthrie.
 The song was released in the Netherlands by Armada Music as a digital download on 29 April 2013 as the second single from van Buuren's fifth studio album "Intense".
 It became a top 10 hit in ten countries.
 In the Netherlands, the song peaked at number 3 on the Dutch Top 40.
 "This Is What It Feels Like" became van Buuren's first top 10 hit in the United Kingdom, peaking at number 6 on the UK Singles Chart.
Richard Bedford (born August 5) is a British singer-songwriter.
 He gained recognition for his vocal work in electronic dance music and trance including his collaborations with Above & Beyond on their 2011 album "Group Therapy", their 2006 album "Tri-state", Armin van Buuren's 2013 album "Intense" and IDMA-nominated singles "Alone Tonight" and "Sun & Moon".
 Richard was named best EDM vocalist in 2013 by theuntz.com and number 3 EDM vocalist by EDM.com in 2014.
 Richard also plays guitar, piano and drums and performed on Armin van Buuren's Armin Only World Tour 2013/2014.
 He is currently working on his artist album forthcoming on his own label Turning Stone Records.
"Not Giving Up on Love" is a collaboration between Dutch DJ and record producer Armin van Buuren and English singer Sophie Ellis-Bextor.
 It was released on 20 August 2010 as the second single from van Buuren's fourth studio album, "Mirage", and the fourth single from Ellis-Bextor's fourth studio album, "Make a Scene".
A Gesamtkunstwerk (] , translated as "total work of art", "ideal work of art", "universal artwork", "synthesis of the arts", "comprehensive artwork", "all-embracing art form" or "total artwork") is a work of art that makes use of all or many art forms or strives to do so.
 The term is a German word which has come to be accepted in English as a term in aesthetics.