I have been to this place, twice, and both experiences were polar opposites.
The first time was supper time, there was a line out the door, and a group blatantly cut, walked up to the front and got served immediately. We then got stuck with a small table in a bad spot, and when we asked to be moved they told us they just gave the last big table away... To the couple that cut in front. Not a good start, but not necessarily the restaurants fault. We ordered pierogis, Mac and cheese and quesedillas. We had to wait 50 minutes to receive anything, with the waiter only addressing us twice to apologise but provide no solution or explanation. Onto the food: The pierogis weren't very memorable, but they were quite small for the price which I will address later. The mac and cheese was decent, but the quesedillas were burnt. We gave ourselves two hours to get food before going to show and still arrived late which is pretty crazy.
Now the second time we went was around noon, much less busy. We got seated immediately and ordered nachos, a burger, the Entrepôt dip, the fish tacos, mac and cheese and the veggie burger. This time the food took about 10 minutes to arrive and was excellent. The complete opposite of our first experience. The nachos were decent, I found the burger very good and it came with a side salad which is great for the price, the fish tacos were pretty good but I found a bit lacking of toppings. The entrepôt dip was amazing, I didn't expect to get my money worth but they provide a huge portion. I didn't try the veggie burger myself, but heard good things. Overall a great experience and definitely want to return at lunchtime. Plus, the whole meal came to about 40$ for three people and we were very satisfied.
As a note on their pricing scheme, it is a double edged sword. For $6 a burger or the tacos is a great deal, on the other hand 6$ for some onion rings or a slice of pie is not. I find this to be a positive since I don't normally order sides when eating out, but you can take it or leave it.
To summarize my experience with the menu:
Burger: 8/10
Mac and cheese: 6/10
Fish tacos: 7/10
Nachos: 7/10
Dip: 8/10
Pierogis: 4/10
Quesedillas: 4/10