There is lodging of all kinds and for all kinds of budgets in Deventer:
A nice campground in an old park just on the other side of the IJssel River (easy walking or biking distance to the old center): Camping de Worp
Hotels, B & B’s, etc. This is the webpage of our local tourist information office with nearly all the lodgings in the area.
Participants have been happy with Adamshof and Hotel De Vischpoorte