Though I have not gone back to Mamitas, we may some time this year. Their food was good and maybe the service of those couple people were not good. When I provided feedback on FB that wasn't good, they didn't delete it and addressed it properly, apologizing and tried to make good on it.
So, I upped my 2 star to a 4 star.
However, if you have coupons, you should make sure before you go there that they will honor it completely, and even when you get there, that they will and exactly what that is.
It seems their FB page isn't working right now, but I appreciated the owner trying to make this right.