I already bought tickets for bus to/from Berlin, planes tickets and booked room in Astrid hotel.
The plan starts on Thursday with Berlinia bus from Szczecin to Berlin Schoenefeld (SXF) airport. Then Easyjet flight number 4701 (16:00) to Brussels (BRU) and from there to Astrid hotel. I will do return trip on Sunday — Easyjet flight number 4702 (20:50), then bus to Szczecin.
So if you want to meet me before FOSDEM crazy time you can catch me on Thursday evening or Friday (rather morning as I plan to do walk around a bit to see something other then hotel and conference).