I dropped by Cinko last night with my husband and a friend of ours. The restaurant was jampacked and on the noisy side, with music playing so loud it was difficult to hold a meaningful conversation; definitely more a bar atmosphere than a restaurant.
The food at Cinko is cheap; as the name hints it, all the food items on the menu are $5 each. Furthermore, it's possible add extras (cheese or jalapeƱo for example) to your plate for $1 to $2 more a piece. May it be noted that there are several vegetarian options on the menu, so that's definitely a plus for veg people out there.
The food itself was very decent; not the most amazing food I've ever tasted but certainly good, especially for the price.
On the noteworthy side, Cinko uses vintage records place mats, quite a unique use of these artifacts! The decor was original too; lots of black and white seemingly hand-drawn patterns and art on the walls, a design which can also be found on the bathroom sinks and even on the toilets themselves!
The main part of the Cinko experience I find regrettable is the loud music and the lack of space. Perhaps the formula of cramming as many people as possible in a locale and cranking up the volume works well in some bars to get the alcohol flowing, but it's not so nice when you are hoping to eat a meal and catch your breath.
I don't know if I will ever be back. I wish good fortune to the owners nonetheless. They have an interesting business in their hands and good waiters.