Amsterdam has numerous hotels.
Sites like www.booking.com, www.expedia.com and www.trivago.com can be used to book a hotel within walking distance of the workshop venue or in the city center, with good public transportation to the venue.
Examples of Amsterdam hotels relatively close to the workshop venue:
Eden Manor Hotel https://www.themanorhotelamsterdam.com/en/
Q-factory hotel: https://www.q-factory-hotel.nl/en/
Hotel Casa https://hotelcasa.nl/
