The workshop is located in the city center of Utrecht. With over 300,000 inhabitants it is the fourth city in the Netherlands. The presence of Utrecht university, one of the largest in the country, provides a lively atmosphere.
Some links about the city of Utrecht to help you get around (no guarantee whatsoever):
http://www.utrecht.nl/smartsite.dws?id=13353
http://wikitravel.org/en/Utrecht
http://www.utrechtyourway.nl/en/region/utrecht