On weekends is always crowded, your group of 6 can be assigned a table for 4, but that is the fun thing. The real Spanish Tapas Bar is crowded, noise, but at the same time fun. It is a good place for birthday or bachelorette parties because there is a private room in the back of the restaurant. It is necessary to make a reservation a couple of days before, no more than a week in advance
About the food, it is good, not excellent. If you like garlic go there. The paella is good so the Tortilla de Patatas. But the best there is the Sangria and at probably the cheapest price in town.