Just a suggestion, based on the term "villa di delizia". See http://it.wikipedia.org/wiki/Villa_di_delizia

Baker turned the condescension in the term“low-cost” on its head by making strategies of cost-effective building the crux of a habitable architecture of delight,
http://www.academia.edu/4213017/The_Gandhi_of_Spatial_Deligh...

The structure is a grid-tied solar powered house based on the concept of ‘Responsive Architecture’. It adjusts to climactic changes and user requirements through automated systems that optimize energy consumption while offering an architecture of delight.
http://www.aia.org/press/releases/AIAB092575

see for instance
On the Architecture of Pleasure | Society of Friends of Epicurus
societyofepicurus.com/on-the-architecture-of-pleasure/
Sep 23, 2013 - On the Architecture of Pleasure. In my recent visit to the federal capital, I was taken in by the majesty, the beauty and the history of the buildings ...

The Education of a Gardener - Page 68 - Google Books Result
books.google.it/books?isbn=1407092049
Russell Page - 2010 - ‎Gardening
Yet these concoctions set a style for a whole architecture of pleasure; and ... of country houses by making level space around them, building terrace walls to ...

Australian Pavilion | ArchitectureAU
architectureau.com/articles/australian-pavilion/
Jun 1, 2010 - For example, Mies van der Rohe's Barcelona Pavilion did not house any ... OTS surely succeeded in creating an architecture of pleasure. ... A country residence channels the rugged beauty and agricultural history of its setting.

There are also books with this term in their names

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Note added at 5 hrs (2014-10-14 14:45:49 GMT)
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maybe "Architecture of Leisure" would work better - one would connect country houses more with leisure than with pleasure.

Houses of the Berkshires, 1870-1930 The Architecture of ...
www.amazon.de › ... › Architektur › DenkmalpflegeTranslate this page
Houses of the Berkshires, 1870-1930 The Architecture of Leisure: Amazon.de: Richard ... Among those titles is the delightful "The Main Line: Country Houses of ...

Nickerson L: The Architecture of Leisure: The Florida Coast ...
www.driehausmuseum.org/calendar_main/event/364/
The Architecture of Leisure: The Florida Coast Resorts of Henry Flagler and Henry Plant. Category: Programs & Events Location: Driehaus Museum

[PDF]Book of abstracts
www.courtresidences.eu/.../Prague 2014 abstracts update.pdf
Jun 7, 2014 - Exploring the Theory of the Architecture of Leisure within the Palace ... were scattered throughout the grounds of the country houses of ...