noun
villa
VIL-uh/ˈvɪlə/
A detached house, often spacious and in a pleasant setting.
The villa has a shaded terrace.

Etymology
Latin villa meant a country house or farm. The selected meaning preserves the country-residence idea, especially a substantial house rather than the agricultural property around it.
In context
because it is a country house it's a villa rather than a Palazzo