I would not classify it as a "fast food".
It is located in a cozy courtyard, in case of bad weather, it is covered with a roof.
A cozy atmosphere in the open air (in good weather), in the evening each table has its own table lamp.
Polite staff, varied cuisine (although not everything can be immediately understood from the menu, so do not hesitate to ask the polite staff).
From a slightly disappointing point of view, prices turn out to be higher than in Moscow due to the volatility of the exchange rate.
To begin with, it was my first time in Chisinau, and I visited cafes and restaurants according to a list from friends who know the city well. One of the first restaurants was Sister. Since it was hot, we did not sit down at an outdoor table (I will say separately that the outdoor veranda is perfectly decorated and located in a quiet courtyard), but went into a stunningly beautiful and cool room. The waiters speak excellent Russian, are courteous and smiling. The menu is for the most refined taste. The price tag is above average. The expectation is within reasonable limits. Separately, it is necessary to say about the inner, slightly mysterious and interestingly decorated hall. We didn't have time to ask why the name of the restaurant was like that. We'll leave it for the next room in Chisinau. We were very satisfied. We definitely recommend the restaurant.