I didn't use my Vodafone SIM for calls in Europe. I have a Skype credit and can make calls for a few cents per minute to any country. I think with the 3GB "You" bundle you get 30 minutes of calls to the Netherlands for free but otherwise have to pay a few cents per minute to make calls to other EU countries. If you have a Skype credit you could do what i do to make the calls that way. I think you can use any phone to call 112 (European equivalent of 911) for free even without a SIM. Every mobile company's plan is different - some may allow more calls within the EU for free.
Incoming calls and texts are free anyway though so you can always give out your new Dutch phone number to hotels etc. that may need to contact you while you travel - won't cost you anything to answer and talk or receive texts, the cost is in texting back or calling back.
Look on Google Maps to see where the mobile stores are close to your hotel. I'm sure there are mobile stores all over the place, but if you want the Vodafone SIM try to go to a Vodafone store to have them set it up.