Lots of comment re Prague and Dubrovnik. What about the other two? I know little about Croatia, and absolutely nothing about Pula. Bordeaux on the other hand...... may I recommend a Barons de Rothschild Lafite 2015. Probably set you back around £18 but worth it for any reasonable excuse to celebrate.
So 7% of the new Europe wide routes have gone to SEN. None to STN. It can't be bad news for the junior airport, but what lies behind their decision? Don't throw in the cliched free landing and parking. It's not enough of an answer.