You can contact Marc Godschalk most easy by email. He will attempt to answer the same day. Marc is not easily reachable by telephone because of his occupation and other activities.
The practice is opened on Monday morning, Tuesday evening and Wednesday evening.
You can directly mail to firstname.lastname@example.org
The practice is in the house of Marc Godschalk, which is in the heart of Rotterdam, on the Noordereiland. You can reach it by stairs. In case that’s not possible (disabled or rather not in a private house) its possible to rent a practiceroom (costs: 10 euro each hour plus taxes) or you meet at your house (extra costs: 25 euro). Parking is free.