Yes, Zandvoort is a good location for a truffle session, especially if you want to stay by the sea.
A session can often be arranged at an external location such as a holiday home, Airbnb, or hotel, so you do not need to change your coastal vacation plans to move it to Haarlem or Amsterdam.
Availability and travel time vary per facilitator, so check who can come to Zandvoort and what the total price with travel costs would be. You can find practical info about arranging a truffle session, including on-location options, on this page.
Hope that helps, and enjoy your time by the sea.