Colored renderings of the decorations of various rooms in London. Not aspirational decor exactly but you’d need a lot of money to get the same effect. George Aitchison Jr. RA, architect, maker (1825-1910).

Alternative elevation of the staircase well showing decoration, from designs for the interior decoration of 1 Grosvenor Crescent, London, for Sir Wilfrid Lawson M.P. 1879. British. Color drawing. Image © RIBA/Royal Institute of British Architects. Fair use license. via https://www.architecture.com/image-library/ribapix/image-information/poster/designs-for-the-interior-decoration-of-1-grosvenor-crescent-london-alternative-elevation-of-the-stai/posterid/RIBA4028.html?Action=Cookie
"Design for the decoration of the staircase, 44 Belgrave Square." 1870. British.
“Design for the decoration of the staircase, 44 Belgrave Square.” 1870. British. Watercolor on paper. Image © RIBA/Royal Institute of British Architects. Fair use license. via https://www.pubhist.com/w20050
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Design for the decorative scheme for the Front Drawing Room, 15 Berkeley Square, London. 1873. British. Watercolour and oil on paper. Image © RIBA/ Royal Institute of British Architects. Fair use license. via
central chimneypiece in the smoking room
Designs for the interior decoration of 1 South Audley Street, Mayfair, London: central chimneypiece in the smoking room. 1893. Classical Revival. British. Exhibited with three other drawings for the interior decoration of the smoking room at the Royal Academy of Arts, London, in 1893. Colored drawing. Image © RIBA/Royal Institute of British Architects. Fair use license. via https://www.architecture.com/image-library/ribapix/image-information/poster/designs-for-the-interior-decoration-of-1-south-audley-street-mayfair-london-central-chimneypiece-in-/posterid/RIBA4034.html

Evocative watercolors in Jugendstil style of rooms in Finland by Eliel Saarinen (1873-1950). Some realized, some not but all crumbled into a heap of rubble by the end of World War II. Father of the slightly more famous Eero Saarinen.

Interior. Suur-Merijoki house. 1902-04.
Interior. Suur-Merijoki house. Left: hall, 1902. Right: Bedroom. 1904. Collection of the Museiverket, Finland. via http://kareliadiaries.blogspot.com/2012/02/in-search-of-saarinens-legacy.html.
Dining room, Hvittorp. 1902.
Dining room, Hvittorp. 1902. via http://lapisblog.epfl.ch/gallery3/index.php/20140709-01/saarinen_eliel_hvittorp_salle-a-manger_1902
Grand salon, Hvittorp, 1902.
Grand salon, Hvittorp, 1902. Photo credit: Laura Trazic. via http://lapisblog.epfl.ch/gallery3/index.php/20140709-01/saarinen_eliel_hvittorp_grand-salon_1902.
Interior for an unknown project. 1901.
Interior for an unknown project. 1901. Photo credit: Laura Trazic. via http://lapisblog.epfl.ch/gallery3/index.php/20140709-01/saarinen_eliel_interior_1901_01.
Library, Suur Merijoki house. 1903.
Library, Suur Merijoki house. 1903. Photo credit: Laura Trazic. via http://lapisblog.epfl.ch/gallery3/index.php/20140709-01/saarinen_eliel_suur-merijoki_bibliotheque_1903