I don't understand other reviews I think people are just too demanding, it's a coffee place and is not expensive.
I understand if they were in New York going to a 5 star Michelin-rated restaurant and you were paying $700 for lunch, then the service should be impeccable but here they are selling coffee.
You come in, you order coffee and pastries-I love the Alfajor- and get your coffee, sit in the nice ambiance, drink it and get out.
As easy as that. The people here are friendly and I've been several times, of course they don't throw themselves on their knees when you come in, but they get the job done, they don't work for millions of dollars, so let's give them a bit of a slack!