The restaurant is a little like a maze. It has little corners and rooms all over the place, on various different floors. It's easy to get lost, but gives you a surprising air of intimacy in several of the rooms as there aren't another hundred people surrounding you. My only complaints here are that some of the chairs are a little uncomfortable - they're a bit small and hard, a little like classroom chairs from elementary school. And some of the tables are a little small for fitting everything on.
Service is attentive, polite and helpful, without being smothering.
We've never had a single complaint about service here. The best part of La Groceria, however, is the food. It's incredibly tender and succulent, more so than any other calamari recipe I've had. The garlic bread La Groceria is a must for anyone visiting this restaurant. It's a delightful mix of tomato, red onion, fennel seed, garlic, and various other bits that goes on top of little toasted half-rolls.