If you describe a place, person, or thing as ~, you approve of them because they are simple in appearance or character, rather than sophisticated or luxurious.
The Tides Inn is both comfortable and ~.
...good, ~ pop music...
ADJ approval
UNPRETENTIOUS
Meaning of UNPRETENTIOUS in English
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012