hole-in-the-wall

Noun

 * 1) A restaurant, shop or other establishment catering to customers that is particularly inconspicuous and easily overlooked.
 * 2)  An automated teller machine (ATM).

Usage notes
Although either plural can be used for both meanings, hole-in-the-walls tends to be most commonly used for the "obscure place" sense, and holes-in-the-wall is more frequently used to mean "automated teller machines".

Used to refer to an inconspicuous establishment, the term has a connotation that the quality of the food or rendered services deserves recognition.

The British sense of an automated teller machine may have originated as a trademark of Barclays.

Translations

 * French: ,
 * Japanese: 穴場
 * Latin: gurgustium