Time Out says
Gràcia is full of beautiful squares and great bars; this square, however, is the one with the most appeal for us. For its friendly, cosmopolitan atmosphere; for the church that overlooks it; for being a meeting place for neighbourhood locals and the rest of Barcelona; and for the healthy rivalry that exists between the three main bars. Try them all! And if you come here on a Sunday morning, it's more than likely you'll also see people dancing the lindy hop.