True, "La Trocadero"'s burger is 1€ cheaper, but it's a much smaller burger, served in takeaway packaging, you cannot split the bill in there either, you have to put money into a machine, you also have to collect your food when they call you, with no menu's to take to your table to study first, and no live music. "La Trocadero" is a good fast food takeaway, maybe the first of a chain, but its not a bar. CatBar is named after my daughter "Cat", after RyanAir didn't get me to her graduation, it was opened when I gave up designing parts of aircrafts, satellites and submarines, to be a full time "vegan beer drinker", but ended up being the table cleaner, beer pipe cleaner, beer barrel changer, plumber, electrician, decorator, accountant, logistics manager, HR person and review responder, sometime even cook and bar tender, and glass collector, getting only a old months wage, ever year.. Your burger was sweet due to the caramelised onions on the top, it should not have been dry, and the atmosphere depends on the people in the bar at the time. The front room and upstairs are much more interesting spaces..