Nope. It gets undue hate on Reddit (and by extension HN) but most people who matter in Bruxelles are heavy Politico consumers and leak to them all the time.
Them, Table Media, and Indigo Publications will give you the best pulse on what's happening in Bruxelles.
Nope. The simple fact that a politician gives any kind of quote, let alone an interview, to politico is a clear sign he/she is on the declining part of a political career. A bit like how using "Bruxelles" in a comment about the EU is a giveaway that your British and/or a (former?) brexiteer.