You should check out “Meister Gerhard”, an excellent tapas place in Cologne’s Kwartier Lateng – this city’s version of Quartier Latin in Paris. It’s where most students live and very much populated by cozy little bars and restaurants, independent cinemas and a gorgeous park. Especially excellent: their selection of wines and the informal atmosphere.
“Meister Gerhard” doesn’t have a website but it’s so busy every night of the week in spite of this that you should Google their phone number and make a reservation before showing up. I went here with the family for my dad’s birthday last weekend and although tapas isn’t really my thing, to be honest, he was thrilled!