Not bad. The proprietress is very friendly. Others have already noted the strange location in the Goodwill/Walgreens/RadioShack center. She mentioned that it's basically her industrial kitchen with a small eat-in and takeout area. She also explained how you need to call her ahead of time in the morning if you want one of the daily specials like the potato pancakes.
She doesn't have cups for water, so you have to buy a bottle.
As for the pierogi, they could've been warned up more to seem hot and fresh, even though they were frozen earlier, as they were kind of lukewarm. The inside is more liquidy than what am used to, as if the potatoes were liquified in a food processor as opposed to being mashed. The dough is also less chewy than I prefer. I think if she crisped them up in a skillet with the bacon and onion butter they would be better as they'd have more texture.
My grandma's (and great aunt's, and great grandma's) are much better, but these were nice to try as an alternative to the frozen ones at Costco.
It's $7.25 for seven if you want to take a bag of frozen ones home.