Hi! We are an American couple with a little baby living in Belfast, desperate for some R&R. We are in Barcelona for 11 days with our infant, meeting my mother-in-law, spritely but 80 years old. We need recs near the Eixample for lunch with all the family, then one or two recs for dinner out alone as a couple. We don't love postmoderny foam and such or trendy loud joints, but adore great fish and simple cuisine. Also, since baby wakes at 5:30 am, we have to get to bed by 10pm or so! What would you all recommend? We are staying near the Arc de Triomphe metro. THANKS!!