This place is amazing for the money. I eat here frequently, and frequently take newcomers with me who love it as well.
The atmosphere is just okay, and the service is decent, but I wouldn't say exceptional. But the overall value is just amazing. The lunch special is $6 and you can choose from fall off the bone chicken, amazing pork, or other selections. You also get two sides which means a TON of absolutely DELICIOUS FOOD for $6!
Do yourself a favor, particularly if you are new to this type of food - or even if you aren't - get the tostones. They are the fried plaintain, and with the mojo sauce they have, it's so amazingly good.
I've been here for dinner once, and I think based on the service and atmosphere it is probably a little overpriced for my taste, but this is my absolute favorite place to have lunch!