Croatia is a member of the European Union, but is not yet included in the so called Schengen-countries. This means there are regular border controls when entering and leaving Croatia. The local currency is called Kuna (HRK), the Euro is not a valid means of payment in Croatia.
Depending on your preferred means of transport you might find te following information useful. Please always check the original sources for the latest options. We cannot accept any liability for correctness or completeness here.
There are some direct flights to Pula Airport (PUY). The destination list and further informaton about Pula Airport is available here. Possible hubs therefore could be Frankfurt, Munich, London, Paris, Amsterdam or Zurich, to name a few.
In case you can better reach the airport of Zagreb (ZAG), the capital of Croatia, you can take a connection flight to Pula from there (two daily connections scheduled as of April 2017) or continue by one of the frequent buses (see below).
A shuttle bus runs a few times a day from Pula airport to downtown Pula. The schedule is available here.
The typical means of transport for intra-Croatian public travel is the bus. There are about 20 (!) daily connections offered by different companies from the capital Zagreb to Pula. The bus ride takes about 4 to 5 hours. On the webpage of the main bus terminal in Zagreb you can see the schedule and also buy a ticket. Another site for online tickets and consumer reviews is this one here.
By Ferry or Passenger Ship
You might consider to book a round trip and take a ferry from Venice to Pula. You would need to travel back via another itinerary because the ferry only runs until 19 September 2017 between Venice and Pula. Here is the ferry schedule and booking webpage. The ferry from Venice to Pula takes about 3 hours. There are many direct flights from all around Europe to Venice Marco Polo airport.
Locals do not advise to take a train to Pula, if you want to have a fast trip and perfer a modern style of travelling. There are no intra-Croatian train lines to Pula. But there is a daily train service from Ljubljana (the capital of Slovenia) to Pula. It could be advertised as a nostalgic and laid-back alternative. In case you have enough time (you will probably need one overnight stay in Ljubljana, because the best train already departs around 6 in the morning) this could be a very special alternative with scenic views of the beautiful and in parts untouched backcountry landscapes of inner Istria. You can book these trains best via the Slovenian Railway Company, but possibly also via the German or Austrian Railways webpages. In case you like a somewhat adventurous style of travel, you can think about it. The train takes about 4 to 5 hours from Ljubljana to Pula.
Pula is relatively easy to reach by car. The Croatian motorway A9 (E751) leads to Pula from the North (from Italy, Slovenia, Austria) with a close-by junction to the East and the A8 motorway (from Zagreb). Please think about car-sharing with colleagues, if you consider this option.
In Pula public transport is offered by regular buses. Detailed information including maps and prices can be found here. The bus station closest to the ECSS venue is called “Verudela” on the small peninsula in the very Southwest of Pula.
Taxis are available at the airport in Pula and all around town. A reservation service for one of the taxi companies is available online here.
City map including ECSS venue (Verudela in the far SW)