Coco restaurant in Humboldt Park

Anyone ever been here? I searched and I couldn't find anything. They are offering a groupon which looks like a great deal, but a cursory look on yelp shows a lot of disappointed people. I trust the user-base here a lot more. Anyone?

http://cocochicago.com/
Coco Restaurant
2723 W Division St
Chicago, Illinois 60622
(773) 384-4811

It's a hit or miss. I went earlier this year. The aranitas were really good (they're kind of hard to find in Chicago). But the lechón was dry. The decor and presentation were nicer than most boricua joints in town, but service was really slow. Not horrible, but I can't really recommend it either.