What does "苍蝇馆子" mean?

1 sense

美食圈词:环境简陋但味道惊艳的小店,老饕的宝藏。

EN"Hole-in-the-wall" — shabby joints with mind-blowing food; foodies' treasures.

这家苍蝇馆子环境一般,味道一绝。