You should carry approximately 100 to 150 Euros with you when you leave. This will save you time and trouble once you arrive. This money might be used for transportation from the airport to your institute and it will also be helpful if you want to purchase food or drink upon arrival. Having this cash will prevent you from scrambling around looking for a currency exchange booth. This is especially important if you plan to arrive on a Sunday. DO NOT carry too much money in cash: it’s dangerous and cannot be replaced.